diff --git a/src/lib_package.c b/src/lib_package.c
index 9cb3f6b8..e8fc0ef7 100644
--- a/src/lib_package.c
+++ b/src/lib_package.c
@@ -68,9 +68,6 @@ static const char *ll_bcsym(void *lib, const char *sym)
 #elif LJ_TARGET_WINDOWS
 
 #define WIN32_LEAN_AND_MEAN
-#ifndef WINVER
-#define WINVER 0x0500
-#endif
 #include <windows.h>
 
 #ifndef GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
diff --git a/src/lj_clib.c b/src/lj_clib.c
index 4e01c5f1..f744c3a1 100644
--- a/src/lj_clib.c
+++ b/src/lj_clib.c
@@ -145,9 +145,6 @@ static void *clib_getsym(CLibrary *cl, const char *name)
 #elif LJ_TARGET_WINDOWS
 
 #define WIN32_LEAN_AND_MEAN
-#ifndef WINVER
-#define WINVER 0x0500
-#endif
 #include <windows.h>
 
 #ifndef GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
diff --git a/src/ljamalg.c b/src/ljamalg.c
index 6a4d6022..14473b80 100644
--- a/src/ljamalg.c
+++ b/src/ljamalg.c
@@ -22,7 +22,7 @@
 #endif
 
 #ifndef WINVER
-#define WINVER 0x0500
+#define WINVER 0x0501
 #endif
 
 #include "lua.h"
diff --git a/src/luaconf.h b/src/luaconf.h
index d5f2d0f5..b297b315 100644
--- a/src/luaconf.h
+++ b/src/luaconf.h
@@ -6,6 +6,9 @@
 #ifndef luaconf_h
 #define luaconf_h
 
+#ifndef WINVER
+#define WINVER 0x0501
+#endif
 #include <limits.h>
 #include <stddef.h>