diff --git a/Parser/myreadline.c b/Parser/myreadline.c
index f0b51f8e1ff..93edd7fbc4c 100644
--- a/Parser/myreadline.c
+++ b/Parser/myreadline.c
@@ -36,8 +36,11 @@ static int
 my_fgets(char *buf, int len, FILE *fp)
 {
     char *p;
-    int i;
     int err;
+#ifdef MS_WINDOWS
+    int i;
+#endif
+
     while (1) {
         if (PyOS_InputHook != NULL)
             (void)(PyOS_InputHook)();