diff --git a/src/client/src/tscSecondaryMerge.c b/src/client/src/tscSecondaryMerge.c
index 51a59005f001f7555a3ffc2e5c7e15ed111af988..d87ee4b81bfe8091ac3a41d23906083a03589684 100644
--- a/src/client/src/tscSecondaryMerge.c
+++ b/src/client/src/tscSecondaryMerge.c
@@ -233,6 +233,7 @@ void tscCreateLocalReducer(tExtMemBuffer **pMemBuffer, int32_t numOfBuffer, tOrd
   }
   assert(idx >= pReducer->numOfBuffer);
   if (idx == 0) {
+    free(pReducer);
     return;
   }