diff --git a/runtime/include/arch/aarch64/context.h b/runtime/include/arch/aarch64/context.h
index 2ae0d35..f8404c9 100644
--- a/runtime/include/arch/aarch64/context.h
+++ b/runtime/include/arch/aarch64/context.h
@@ -1,5 +1,4 @@
-#ifndef ARCH_AARCH64_CONTEXT_H
-#define ARCH_AARCH64_CONTEXT_H
+#pragma once
 
 #include <unistd.h>
 #include <ucontext.h>
@@ -112,5 +111,3 @@ arch_context_switch(arch_context_t *ca, arch_context_t *na)
 	               "d8", "d9", "d10", "d11", "d12", "d13", "d14", "d15");
 	return 0;
 }
-
-#endif /* ARCH_AARCH64_CONTEXT_H */
diff --git a/runtime/include/arch/context.h b/runtime/include/arch/context.h
index ba56caf..0a393ff 100644
--- a/runtime/include/arch/context.h
+++ b/runtime/include/arch/context.h
@@ -1,5 +1,4 @@
-#ifndef ARCH_CONTEXT_H
-#define ARCH_CONTEXT_H
+#pragma once
 
 #if defined(AARCH64) || defined(aarch64)
 #include "aarch64/context.h"
@@ -10,5 +9,3 @@
 #define X86_64
 #include "x86_64/context.h"
 #endif
-
-#endif /* ARCH_CONTEXT_H */
diff --git a/runtime/include/arch/x86_64/context.h b/runtime/include/arch/x86_64/context.h
index ac71dc0..70c2bc5 100644
--- a/runtime/include/arch/x86_64/context.h
+++ b/runtime/include/arch/x86_64/context.h
@@ -1,5 +1,4 @@
-#ifndef ARCH_X86_64_CONTEXT_H
-#define ARCH_X86_64_CONTEXT_H
+#pragma once
 
 #include <assert.h>
 #include <string.h>
@@ -162,5 +161,3 @@ arch_context_switch(arch_context_t *current, arch_context_t *next)
 
 	return 0;
 }
-
-#endif /* ARCH_X86_64_CONTEXT_H */
diff --git a/runtime/include/current_sandbox.h b/runtime/include/current_sandbox.h
index e1bd43c..a0d47b4 100644
--- a/runtime/include/current_sandbox.h
+++ b/runtime/include/current_sandbox.h
@@ -1,5 +1,4 @@
-#ifndef SFRT_CURRENT_SANDBOX_H
-#define SFRT_CURRENT_SANDBOX_H
+#pragma once
 
 #include "sandbox.h"
 #include "types.h"
@@ -11,5 +10,3 @@ union uv_any_handle *current_sandbox_get_libuv_handle(int io_handle_index);
 int                  current_sandbox_initialize_io_handle(void);
 void                 current_sandbox_set(struct sandbox *sandbox);
 int                  current_sandbox_set_file_descriptor(int io_handle_index, int file_descriptor);
-
-#endif /* SFRT_CURRENT_SANDBOX_H */
diff --git a/runtime/include/http_parser_settings.h b/runtime/include/http_parser_settings.h
index b297281..8038630 100644
--- a/runtime/include/http_parser_settings.h
+++ b/runtime/include/http_parser_settings.h
@@ -1,9 +1,6 @@
-#ifndef SRFT_HTTP_PARSER_SETTINGS_H
-#define SRFT_HTTP_PARSER_SETTINGS_H
+#pragma once
 
 #include "http_parser.h"
 
 void                  http_parser_settings_initialize(void);
 http_parser_settings *http_parser_settings_get();
-
-#endif /* SRFT_HTTP_PARSER_SETTINGS_H */
diff --git a/runtime/include/http_request.h b/runtime/include/http_request.h
index 3cbd391..4bdbbeb 100644
--- a/runtime/include/http_request.h
+++ b/runtime/include/http_request.h
@@ -1,5 +1,4 @@
-#ifndef SFRT_HTTP_REQUEST_H
-#define SFRT_HTTP_REQUEST_H
+#pragma once
 
 #include <types.h>
 
@@ -28,5 +27,3 @@ struct http_request {
  * General HTTP Request Functions                  *
  **************************************************/
 int http_request_get_body(struct http_request *http_request, char **body);
-
-#endif /* SFRT_HTTP_HEADER_H */
diff --git a/runtime/include/http_response.h b/runtime/include/http_response.h
index 8674bf0..e8c2ffc 100644
--- a/runtime/include/http_response.h
+++ b/runtime/include/http_response.h
@@ -1,5 +1,4 @@
-#ifndef SFRT_HTTP_RESPONSE_H
-#define SFRT_HTTP_RESPONSE_H
+#pragma once
 
 #include <http_parser.h>
 #include <types.h>
@@ -36,5 +35,3 @@ int http_response_encode_as_vector(struct http_response *http_response);
 int http_response_set_body(struct http_response *http_response, char *body, int length);
 int http_response_set_header(struct http_response *http_response, char *h, int length);
 int http_response_set_status(struct http_response *http_response, char *status, int length);
-
-#endif /* SFRT_HTTP_RESPONSE_H */
diff --git a/runtime/include/libuv_callbacks.h b/runtime/include/libuv_callbacks.h
index f50d0c3..aa90d8f 100644
--- a/runtime/include/libuv_callbacks.h
+++ b/runtime/include/libuv_callbacks.h
@@ -1,6 +1,4 @@
-
-#ifndef SFRT_LIBUV_CALLBACKS_H
-#define SFRT_LIBUV_CALLBACKS_H
+#pragma once
 
 #include <assert.h>
 #include <runtime.h>
@@ -89,5 +87,3 @@ libuv_callbacks_on_allocate_setup_request_response_data(uv_handle_t *h, size_t s
 	buf->base         = (sandbox->request_response_data + sandbox->request_response_data_length);
 	buf->len          = l > suggested ? suggested : l;
 }
-
-#endif /* SFRT_SANDBOX_H */
diff --git a/runtime/include/module.h b/runtime/include/module.h
index 46340d3..45fd48c 100644
--- a/runtime/include/module.h
+++ b/runtime/include/module.h
@@ -1,8 +1,6 @@
-#ifndef SFRT_MODULE_H
-#define SFRT_MODULE_H
+#pragma once
 
 #include <uv.h>
-
 #include <types.h>
 
 struct module {
@@ -190,5 +188,3 @@ void           module_free(struct module *module);
 struct module *module_new(char *mod_name, char *mod_path, i32 argument_count, u32 stack_sz, u32 max_heap,
                           u32 relative_deadline_us, int port, int req_sz, int resp_sz);
 int            module_new_from_json(char *filename);
-
-#endif /* SFRT_MODULE_H */
diff --git a/runtime/include/module_database.h b/runtime/include/module_database.h
index 3d65eee..c966ed8 100644
--- a/runtime/include/module_database.h
+++ b/runtime/include/module_database.h
@@ -1,5 +1,4 @@
-#ifndef SFRT_MODULE_DATABASE_H
-#define SFRT_MODULE_DATABASE_H
+#pragma once
 
 #include <module.h>
 
@@ -25,5 +24,3 @@ module_database_add(struct module *module)
 
 	return 0;
 }
-
-#endif /* SFRT_MODULE_DATABASE_H */
diff --git a/runtime/include/runtime.h b/runtime/include/runtime.h
index d240fbb..668da81 100644
--- a/runtime/include/runtime.h
+++ b/runtime/include/runtime.h
@@ -1,5 +1,4 @@
-#ifndef SFRT_RUNTIME_H
-#define SFRT_RUNTIME_H
+#pragma once
 
 #include <sys/epoll.h> /* for epoll_create1(), epoll_ctl(), struct epoll_event */
 #include "types.h"
@@ -15,5 +14,3 @@ void         listener_thread_initialize(void);
 void         stub_init(i32 offset);
 
 unsigned long long __getcycles(void);
-
-#endif /* SFRT_RUNTIME_H */
diff --git a/runtime/include/sandbox.h b/runtime/include/sandbox.h
index 796ca7f..d875475 100644
--- a/runtime/include/sandbox.h
+++ b/runtime/include/sandbox.h
@@ -1,5 +1,4 @@
-#ifndef SFRT_SANDBOX_H
-#define SFRT_SANDBOX_H
+#pragma once
 
 #include <ucontext.h>
 #include <uv.h>
@@ -224,5 +223,3 @@ sandbox_get_libuv_handle(struct sandbox *sandbox, int io_handle_index)
 	if (io_handle_index >= SANDBOX_MAX_IO_HANDLE_COUNT || io_handle_index < 0) return NULL;
 	return &sandbox->io_handles[io_handle_index].libuv_handle;
 }
-
-#endif /* SFRT_SANDBOX_H */
diff --git a/runtime/include/sandbox_completion_queue.h b/runtime/include/sandbox_completion_queue.h
index f2d5b59..61aa8a8 100644
--- a/runtime/include/sandbox_completion_queue.h
+++ b/runtime/include/sandbox_completion_queue.h
@@ -1,10 +1,7 @@
-#ifndef SFRT_SANDBOX_COMPLETION_QUEUE_H
-#define SFRT_SANDBOX_COMPLETION_QUEUE_H
+#pragma once
 
 #include "sandbox.h"
 
 void sandbox_completion_queue_add(struct sandbox *sandbox);
 void sandbox_completion_queue_free();
 void sandbox_completion_queue_initialize();
-
-#endif /* SFRT_SANDBOX_COMPLETION_QUEUE_H */
\ No newline at end of file
diff --git a/runtime/include/sandbox_request.h b/runtime/include/sandbox_request.h
index 3d3e03e..96d877f 100644
--- a/runtime/include/sandbox_request.h
+++ b/runtime/include/sandbox_request.h
@@ -1,5 +1,4 @@
-#ifndef SFRT_SANDBOX_REQUEST_H
-#define SFRT_SANDBOX_REQUEST_H
+#pragma once
 
 #include <stdbool.h>
 
@@ -48,5 +47,3 @@ sandbox_request_allocate(struct module *module, char *arguments, int socket_desc
 	debuglog("[%p: %s]\n", sandbox_request, sandbox_request->module->name);
 	return sandbox_request;
 }
-
-#endif /* SFRT_SANDBOX_REQUEST_H */
\ No newline at end of file
diff --git a/runtime/include/sandbox_request_scheduler.h b/runtime/include/sandbox_request_scheduler.h
index d5ae5e8..c179776 100644
--- a/runtime/include/sandbox_request_scheduler.h
+++ b/runtime/include/sandbox_request_scheduler.h
@@ -1,5 +1,4 @@
-#ifndef SFRT_SANDBOX_REQUEST_SCHEDULER_H
-#define SFRT_SANDBOX_REQUEST_SCHEDULER_H
+#pragma once
 
 #include <sandbox_request.h>
 
@@ -20,5 +19,3 @@ void sandbox_request_scheduler_initialize(sandbox_request_scheduler_config_t *co
 sandbox_request_t *sandbox_request_scheduler_add(sandbox_request_t *);
 sandbox_request_t *sandbox_request_scheduler_remove();
 uint64_t           sandbox_request_scheduler_peek();
-
-#endif /* SFRT_SANDBOX_REQUEST_SCHEDULER_H */
\ No newline at end of file
diff --git a/runtime/include/sandbox_request_scheduler_fifo.h b/runtime/include/sandbox_request_scheduler_fifo.h
index 29950f5..691fd92 100644
--- a/runtime/include/sandbox_request_scheduler_fifo.h
+++ b/runtime/include/sandbox_request_scheduler_fifo.h
@@ -1,8 +1,5 @@
-#ifndef SFRT_SANDBOX_REQUEST_SCHEDULER_FIFO_H
-#define SFRT_SANDBOX_REQUEST_SCHEDULER_FIFO_H
+#pragma once
 
 #include <sandbox_request_scheduler.h>
 
 void sandbox_request_scheduler_fifo_initialize();
-
-#endif /* SFRT_SANDBOX_REQUEST_SCHEDULER_FIFO_H */
\ No newline at end of file
diff --git a/runtime/include/sandbox_request_scheduler_ps.h b/runtime/include/sandbox_request_scheduler_ps.h
index e4db8de..4189931 100644
--- a/runtime/include/sandbox_request_scheduler_ps.h
+++ b/runtime/include/sandbox_request_scheduler_ps.h
@@ -1,8 +1,5 @@
-#ifndef SFRT_SANDBOX_REQUEST_SCHEDULER_PS_H
-#define SFRT_SANDBOX_REQUEST_SCHEDULER_PS_H
+#pragma once
 
 #include <sandbox_request_scheduler.h>
 
 void sandbox_request_scheduler_ps_initialize();
-
-#endif /* SFRT_SANDBOX_REQUEST_SCHEDULER_PS_H */
\ No newline at end of file
diff --git a/runtime/include/sandbox_run_queue.h b/runtime/include/sandbox_run_queue.h
index b0b779b..7d72582 100644
--- a/runtime/include/sandbox_run_queue.h
+++ b/runtime/include/sandbox_run_queue.h
@@ -1,5 +1,4 @@
-#ifndef SFRT_SANDBOX_RUN_QUEUE_H
-#define SFRT_SANDBOX_RUN_QUEUE_H
+#pragma once
 
 #include <stdbool.h>
 #include <sandbox.h>
@@ -29,6 +28,3 @@ void            sandbox_run_queue_delete(struct sandbox *);
 bool            sandbox_run_queue_is_empty();
 struct sandbox *sandbox_run_queue_get_next();
 void            sandbox_run_queue_preempt(ucontext_t *);
-
-
-#endif /* SFRT_SANDBOX_RUN_QUEUE_H */
\ No newline at end of file
diff --git a/runtime/include/sandbox_run_queue_fifo.h b/runtime/include/sandbox_run_queue_fifo.h
index e1093ed..7c7d39f 100644
--- a/runtime/include/sandbox_run_queue_fifo.h
+++ b/runtime/include/sandbox_run_queue_fifo.h
@@ -1,8 +1,5 @@
-#ifndef SFRT_SANDBOX_RUN_QUEUE_FIFO_H
-#define SFRT_SANDBOX_RUN_QUEUE_FIFO_H
+#pragma once
 
 #include "sandbox.h"
 
 void sandbox_run_queue_fifo_initialize();
-
-#endif /* SFRT_SANDBOX_RUN_QUEUE_FIFO_H */
\ No newline at end of file
diff --git a/runtime/include/sandbox_run_queue_ps.h b/runtime/include/sandbox_run_queue_ps.h
index 3ec0d1e..95ea0e9 100644
--- a/runtime/include/sandbox_run_queue_ps.h
+++ b/runtime/include/sandbox_run_queue_ps.h
@@ -1,8 +1,5 @@
-#ifndef SFRT_SANDBOX_RUN_QUEUE_PS_H
-#define SFRT_SANDBOX_RUN_QUEUE_PS_H
+#pragma once
 
 #include "sandbox.h"
 
 void sandbox_run_queue_ps_initialize();
-
-#endif /* SFRT_SANDBOX_RUN_QUEUE_PS_H */
\ No newline at end of file
diff --git a/runtime/include/software_interrupt.h b/runtime/include/software_interrupt.h
index 7b63c25..b340a03 100644
--- a/runtime/include/software_interrupt.h
+++ b/runtime/include/software_interrupt.h
@@ -1,5 +1,4 @@
-#ifndef SFRT_SOFTWARE_INTERRUPT_H
-#define SFRT_SOFTWARE_INTERRUPT_H
+#pragma once
 
 #include <stdbool.h>
 #include <assert.h>
@@ -99,5 +98,3 @@ software_interrupt_unmask_signal(int signal)
 void software_interrupt_initialize(void);
 void software_interrupt_arm_timer(void);
 void software_interrupt_disarm_timer(void);
-
-#endif /* SFRT_SOFTWARE_INTERRUPT_H */
diff --git a/runtime/include/types.h b/runtime/include/types.h
index 13d71e9..5e4136f 100644
--- a/runtime/include/types.h
+++ b/runtime/include/types.h
@@ -1,5 +1,4 @@
-#ifndef SFRT_TYPES_H
-#define SFRT_TYPES_H
+#pragma once
 
 #include <assert.h>
 #include <errno.h>
@@ -150,6 +149,3 @@ typedef void (*mod_libc_fn_t)(i32, i32);
 /* If multicore, use all but the dedicated listener core
 If there are fewer cores than this, main dynamically overrides this and uses all available */
 #define WORKER_THREAD_CORE_COUNT (NCORES > 1 ? NCORES - 1 : NCORES)
-
-
-#endif /* SFRT_TYPES_H */
diff --git a/runtime/include/worker_thread.h b/runtime/include/worker_thread.h
index de15987..33c8586 100644
--- a/runtime/include/worker_thread.h
+++ b/runtime/include/worker_thread.h
@@ -1,5 +1,4 @@
-#ifndef SFRT_WORKER_THREAD_H
-#define SFRT_WORKER_THREAD_H
+#pragma once
 
 #include <uv.h>
 #include "types.h"
@@ -56,5 +55,3 @@ worker_thread_get_libuv_handle(void)
 {
 	return &worker_thread_uvio_handle;
 }
-
-#endif /* SFRT_WORKER_THREAD_H */