diff --git a/src/codegen_x86.c b/src/codegen_x86.c
index 5697e20..57ecdfa 100644
--- a/src/codegen_x86.c
+++ b/src/codegen_x86.c
@@ -19,6 +19,9 @@
 #include <sys/mman.h>
 #include <unistd.h>
 #endif
+#if defined WIN32 || defined _WIN32 || defined _WIN32
+#include <windows.h>
+#endif
 
 int codegen_flags_changed = 0;
 int codegen_fpu_entered = 0;
@@ -63,7 +66,11 @@ void codegen_init()
 	long pagemask = ~(pagesize - 1);
 #endif
         
+#if defined WIN32 || defined _WIN32 || defined _WIN32
+        codeblock = VirtualAlloc(NULL, BLOCK_SIZE * sizeof(codeblock_t), MEM_COMMIT, PAGE_EXECUTE_READWRITE);
+#else
         codeblock = malloc(BLOCK_SIZE * sizeof(codeblock_t));
+#endif
         codeblock_hash = malloc(HASH_SIZE * sizeof(codeblock_t *));
 
         memset(codeblock, 0, BLOCK_SIZE * sizeof(codeblock_t));