diff --git a/src/tsdb/src/tsdbMemTable.c b/src/tsdb/src/tsdbMemTable.c
index 7a360c25f9..1108340cf0 100644
--- a/src/tsdb/src/tsdbMemTable.c
+++ b/src/tsdb/src/tsdbMemTable.c
@@ -587,6 +587,7 @@ static int tsdbCommitToFile(STsdbRepo *pRepo, int fid, SCommitIter *iters, SRWHe
     goto _err;
   }
 
+  tfree(dataDir);
   tsdbCloseHelperFile(pHelper, 0);
 
   pthread_rwlock_wrlock(&(pFileH->fhlock));