diff --git a/src/replication.c b/src/replication.c
index f22072a0..28a37786 100644
--- a/src/replication.c
+++ b/src/replication.c
@@ -1539,6 +1539,7 @@ int slaveTryPartialResynchronization(int fd, int read_reply) {
         serverLog(LL_NOTICE,
             "Master is currently unable to PSYNC "
             "but should be in the future: %s", reply);
+        sdsfree(reply);
         return PSYNC_TRY_LATER;
     }