diff --git a/src/openrct2/common.h b/src/openrct2/common.h
index e33c5f5df8..1a1d89dafe 100644
--- a/src/openrct2/common.h
+++ b/src/openrct2/common.h
@@ -220,16 +220,7 @@ typedef uint16 rct_string_id;
 	#define RESTRICT
 #endif
 
-#ifdef __cplusplus
 #define assert_struct_size(x, y) static_assert(sizeof(x) == (y), "Improper struct size")
-#else
-	// Visual Studio does not know _Static_assert
-	#if !defined(_MSC_VER)
-		#define assert_struct_size(x, y) _Static_assert(sizeof(x) == (y), "Improper struct size")
-	#else
-		#define assert_struct_size(x, y)
-	#endif // !defined(_MSC_VER)
-#endif
 
 #ifdef PLATFORM_X86
 	#ifndef FASTCALL