diff --git a/Modules/regexpr.c b/Modules/regexpr.c
index 6d6bb0f3bef..84f0b9489e1 100644
--- a/Modules/regexpr.c
+++ b/Modules/regexpr.c
@@ -24,6 +24,10 @@ from GNU regexp.
 
 */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h" /* For Win* specific redefinition of printf c.s. */
+#endif
+
 #include "myproto.h" /* For PROTO macro --Guido */
 
 #include <stdio.h>