diff --git a/include/util/tskiplist.h b/include/util/tskiplist.h
index eeae1b47daf2ff62511dfe1329ef55e62ed916be..10d3dcdbaaf2cf31d5620ce8c060da5e31585181 100644
--- a/include/util/tskiplist.h
+++ b/include/util/tskiplist.h
@@ -56,10 +56,10 @@ typedef enum { SSkipListPutSuccess = 0, SSkipListPutEarlyStop = 1, SSkipListPutS
 
 typedef struct SSkipList {
   uint32_t           seed;
+  uint16_t           len;
   __compar_fn_t      comparFn;
   __sl_key_fn_t      keyFn;
   TdThreadRwlock    *lock;
-  uint16_t           len;
   uint8_t            maxLevel;
   uint8_t            flags;
   uint8_t            type;  // static info above
diff --git a/source/util/src/tskiplist.c b/source/util/src/tskiplist.c
index 13637b8fe4971f8ed315a62a01b93a665a4d84a1..4ce668e6bab22abc74f509114ab84b0693469634 100644
--- a/source/util/src/tskiplist.c
+++ b/source/util/src/tskiplist.c
@@ -185,10 +185,10 @@ void tSkipListPutBatchByIter(SSkipList *pSkipList, void *iter, iter_next_fn_t it
             pKey = SL_GET_NODE_KEY(pSkipList, p);
 
             compare = pSkipList->comparFn(pKey, pDataKey);
-            if (compare >= 0) {
-              if (compare == 0 && !hasDup) hasDup = true;
+            if (compare > 0) {
               break;
             } else {
+              if (compare == 0 && !hasDup) hasDup = true;
               px = p;
               p = SL_NODE_GET_FORWARD_POINTER(px, i);
             }