diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 9ba2042a20eef5dcbb6bd1d311379dfea155246f..5c093daa7a78e04a59ecce42a8688c3ab329ce94 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -3451,7 +3451,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
           }
           for (int i = 0; i < counter + 1; ++i) {
             intervals[startIndex] = start->valuedouble + i * width->valuedouble;
-            if (isinf(intervals[i])) {
+            if (isinf(intervals[startIndex])) {
               tfree(intervals);
               return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg23);
             }
@@ -3461,7 +3461,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
           //log bin process
           for (int i = 0; i < counter + 1; ++i) {
             intervals[startIndex] = start->valuedouble * pow(factor->valuedouble, i * 1.0);
-            if (isinf(intervals[i])) {
+            if (isinf(intervals[startIndex])) {
               tfree(intervals);
               return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg23);
             }