diff --git a/src/lj_mcode.c b/src/lj_mcode.c
index c8ea5799..4af06407 100644
--- a/src/lj_mcode.c
+++ b/src/lj_mcode.c
@@ -29,6 +29,11 @@
 #include <valgrind/valgrind.h>
 #endif
 
+#if LJ_TARGET_WINDOWS
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
+
 #if LJ_TARGET_IOS
 void sys_icache_invalidate(void *start, size_t len);
 #endif
@@ -39,7 +44,9 @@ void lj_mcode_sync(void *start, void *end)
 #ifdef LUAJIT_USE_VALGRIND
   VALGRIND_DISCARD_TRANSLATIONS(start, (char *)end-(char *)start);
 #endif
-#if LJ_TARGET_X86ORX64 || _MSC_VER
+#if LJ_TARGET_WINDOWS
+  FlushInstructionCache(GetCurrentProcess(), start, (char *)end-(char *)start);  
+#elif LJ_TARGET_X86ORX64
   UNUSED(start); UNUSED(end);
 #elif LJ_TARGET_IOS
   sys_icache_invalidate(start, (char *)end-(char *)start);
@@ -58,9 +65,6 @@ void lj_mcode_sync(void *start, void *end)
 
 #if LJ_TARGET_WINDOWS
 
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-
 #define MCPROT_RW	PAGE_READWRITE
 #define MCPROT_RX	PAGE_EXECUTE_READ
 #define MCPROT_RWX	PAGE_EXECUTE_READWRITE