diff --git a/src/dict.c b/src/dict.c
index 81cdfe0ea720ee2fe7387b3057e8c95f23913d83..840aae8e4244c13dc6bf06413e6f90e292ce970b 100644
--- a/src/dict.c
+++ b/src/dict.c
@@ -570,7 +570,7 @@ dictEntry *dictNext(dictIterator *iter)
                     iter->fingerprint = dictFingerprint(iter->d);
             }
             iter->index++;
-            if (iter->index >= (signed) ht->size) {
+            if (iter->index >= (long) ht->size) {
                 if (dictIsRehashing(iter->d) && iter->table == 0) {
                     iter->table++;
                     iter->index = 0;