diff --git a/src/t_set.c b/src/t_set.c
index 1c066e7008..efc3609d0b 100644
--- a/src/t_set.c
+++ b/src/t_set.c
@@ -139,16 +139,17 @@ int setTypeAddAux(robj *set, char *str, size_t len, int64_t llval, int str_is_sd
         /* Avoid duping the string if it is an sds string. */
         sds sdsval = str_is_sds ? (sds)str : sdsnewlen(str, len);
         hashset *hs = set->ptr;
-        void *position = hashsetFindPositionForInsert(hs, sdsval, NULL);
-        if (position) {
+        hashsetPosition position;
+        if (hashsetFindPositionForInsert(hs, sdsval, &position, NULL)) {
             /* Key doesn't already exist in the set. Add it but dup the key. */
             if (sdsval == str) sdsval = sdsdup(sdsval);
-            hashsetInsertAtPosition(hs, sdsval, position);
+            hashsetInsertAtPosition(hs, sdsval, &position);
+            return 1;
         } else if (sdsval != str) {
             /* String is already a member. Free our temporary sds copy. */
             sdsfree(sdsval);
+            return 0;
         }
-        return (position != NULL);
     } else if (set->encoding == OBJ_ENCODING_LISTPACK) {
         unsigned char *lp = set->ptr;
         unsigned char *p = lpFirst(lp);