diff --git a/Modules/_sre.c b/Modules/_sre.c
index 8af876f..9eec035 100644
--- a/Modules/_sre.c
+++ b/Modules/_sre.c
@@ -219,10 +219,10 @@
 	switch (at) {
 	case 'a':
 		/* beginning */
-		return (ptr == state->beginning);
+		return ((void*) ptr == state->beginning);
 	case 'z':
 		/* end */
-		return (ptr == state->end);
+		return ((void*) ptr == state->end);
 	case 'b':
 		/* word boundary */
 		if (state->beginning == state->end)