diff --git a/src/config/afsconfig-windows.h b/src/config/afsconfig-windows.h
index 775a7f046d..0dd71fa154 100644
--- a/src/config/afsconfig-windows.h
+++ b/src/config/afsconfig-windows.h
@@ -263,6 +263,7 @@ typedef int errno_t;
 #define HAVE_STRFTIME 1
 #define HAVE_GETCWD 1
 #define HAVE_STRUPR 1
+#define HAVE_UINTPTR_T 1
 
 #define HAVE_KRB5_CREDS_KEYBLOCK_ENCTYPE 1