diff --git a/runtime/include/sandbox.h b/runtime/include/sandbox.h
index cb40124..71743ad 100644
--- a/runtime/include/sandbox.h
+++ b/runtime/include/sandbox.h
@@ -181,7 +181,7 @@ sandbox_state_stringify(sandbox_state_t state)
 		return "Error";
 	default:
 		/* Crash, as this should be exclusive */
-		assert(0);
+		abort();
 	}
 }
 
diff --git a/runtime/src/arch_context.c b/runtime/src/arch_context.c
index 1e8befc..cbd763a 100644
--- a/runtime/src/arch_context.c
+++ b/runtime/src/arch_context.c
@@ -1,7 +1,7 @@
-#include <assert.h>
 #include <pthread.h>
 #include <signal.h>
 #include <stdbool.h>
+#include <stdlib.h>
 
 /**
  * Called by the inline assembly in arch_context_switch to send a SIGUSR1 in order to restore a previously preempted
@@ -12,5 +12,5 @@
 void __attribute__((noinline)) __attribute__((noreturn)) arch_context_restore_preempted(void)
 {
 	pthread_kill(pthread_self(), SIGUSR1);
-	assert(false);
+	abort();
 }
diff --git a/runtime/src/libc/uvio.c b/runtime/src/libc/uvio.c
index a48d94d..d3ce0f5 100644
--- a/runtime/src/libc/uvio.c
+++ b/runtime/src/libc/uvio.c
@@ -1,3 +1,4 @@
+#include <stdlib.h>
 #include <uv.h>
 
 #include "current_sandbox.h"
@@ -627,7 +628,7 @@ wasm_fcntl(uint32_t file_descriptor, uint32_t cmd, uint32_t arg_or_lock_ptr)
 	case WF_SETLK:
 		return 0;
 	default:
-		assert(0);
+		abort();
 	}
 }
 
diff --git a/runtime/src/worker_thread.c b/runtime/src/worker_thread.c
index a5f8d98..baa5601 100644
--- a/runtime/src/worker_thread.c
+++ b/runtime/src/worker_thread.c
@@ -2,6 +2,7 @@
 #include <pthread.h>
 #include <signal.h>
 #include <sched.h>
+#include <stdlib.h>
 #include <sys/mman.h>
 #include <uv.h>
 
@@ -311,5 +312,5 @@ worker_thread_on_sandbox_exit(struct sandbox *exiting_sandbox)
 	assert(!software_interrupt_is_enabled());
 	worker_thread_dump_lock_overhead();
 	worker_thread_switch_to_base_context();
-	assert(0);
+	abort();
 }