diff --git a/source/dnode/vnode/src/sma/smaOpen.c b/source/dnode/vnode/src/sma/smaOpen.c
index 1c7db28e189d918fb68e81dabb6249ea246e2bea..2a74fe78cbc66a3873857347df010190554e1e76 100644
--- a/source/dnode/vnode/src/sma/smaOpen.c
+++ b/source/dnode/vnode/src/sma/smaOpen.c
@@ -132,6 +132,7 @@ int32_t smaClose(SSma *pSma) {
     if SMA_RSMA_TSDB0 (pSma) tsdbClose(&SMA_RSMA_TSDB0(pSma));
     if SMA_RSMA_TSDB1 (pSma) tsdbClose(&SMA_RSMA_TSDB1(pSma));
     if SMA_RSMA_TSDB2 (pSma) tsdbClose(&SMA_RSMA_TSDB2(pSma));
+    taosMemoryFree(pSma);
   }
   return 0;
 }
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