diff --git a/source/libs/planner/src/planOptimizer.c b/source/libs/planner/src/planOptimizer.c
index b6c7c3b35966938b4b07f91ac89b5f4975f58409..59b7c417a060245900e683815d9e8c402affaf0a 100644
--- a/source/libs/planner/src/planOptimizer.c
+++ b/source/libs/planner/src/planOptimizer.c
@@ -2233,7 +2233,7 @@ static bool lastRowScanOptMayBeOptimized(SLogicNode* pNode) {
       SNode* pPar = nodesListGetNode(pAggFunc->pParameterList, 0);
       if (QUERY_NODE_COLUMN == nodeType(pPar)) {
         SColumnNode* pCol = (SColumnNode*)pPar;
-        if (pCol->colType == COLUMN_TYPE_TAG) {
+        if (pCol->colType != COLUMN_TYPE_COLUMN) {
           return false;      
         }
       }