diff --git a/runtime/src/libc/syscall.c b/runtime/src/libc/syscall.c
index c389b95..7fca22c 100644
--- a/runtime/src/libc/syscall.c
+++ b/runtime/src/libc/syscall.c
@@ -488,7 +488,7 @@ wasm_writev(int32_t fd, int32_t iov_offset, int32_t iovcnt)
 			int32_t len = iov[i].len;
 			void *  ptr = worker_thread_get_memory_ptr_void(iov[i].base_offset, len);
 
-			printf("%.*s", len, ptr);
+			printf("%.*s", len, (char *)ptr);
 			sum += len;
 		}
 		return sum;
diff --git a/runtime/src/memory/64bit_nix.c b/runtime/src/memory/64bit_nix.c
index b76177e..9206cf0 100644
--- a/runtime/src/memory/64bit_nix.c
+++ b/runtime/src/memory/64bit_nix.c
@@ -30,7 +30,7 @@ expand_memory(void)
 	// FIXME: max_pages = 0 => no limit. Issue #103.
 	assert((sandbox->sandbox_size + local_sandbox_context_cache.linear_memory_size) / WASM_PAGE_SIZE
 	       < WASM_MAX_PAGES);
-	assert(sandbox->state = SANDBOX_RUNNING);
+	assert(sandbox->state == SANDBOX_RUNNING);
 	// Remap the relevant wasm page to readable
 	char *mem_as_chars = local_sandbox_context_cache.linear_memory_start;
 	char *page_address = &mem_as_chars[local_sandbox_context_cache.linear_memory_size];