diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index edce330f5adb1df70ad034ac265dc8a4e3a7d013..ed92d97e9b7c77e7f063933e74156d445e6082bf 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -6436,7 +6436,7 @@ int32_t setAlterTableInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
   const char* msg10 = "invalid tag name";
   const char* msg11 = "primary tag cannot be dropped";
   const char* msg12 = "update normal column not supported";
-  //const char* msg13 = "invalid tag value";
+  const char* msg13 = "invalid tag value";
   const char* msg14 = "tag value too long";
   
   const char* msg15 = "no columns can be dropped";
@@ -6685,7 +6685,10 @@ int32_t setAlterTableInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
       free(row);
     }else{
       // copy the tag value to pMsg body
-      tVariantDump(&pItem->pVar, pUpdateMsg->data + schemaLen, pTagsSchema->type, true);
+      if (tVariantDump(&pItem->pVar, pUpdateMsg->data + schemaLen, pTagsSchema->type, true)
+          != TSDB_CODE_SUCCESS){
+        return invalidOperationMsg(pMsg, msg13);
+      }
     }
 
     int32_t len = 0;
diff --git a/src/tsdb/CMakeLists.txt b/src/tsdb/CMakeLists.txt
index 0f472cfbfc443e57e538068d28cb3c2c8d228dec..875bb6258125b88399558c75a6169dea67bfdde8 100644
--- a/src/tsdb/CMakeLists.txt
+++ b/src/tsdb/CMakeLists.txt
@@ -3,9 +3,10 @@ PROJECT(TDengine)
 
 INCLUDE_DIRECTORIES(inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/cJson/inc)
 AUX_SOURCE_DIRECTORY(src SRC)
 ADD_LIBRARY(tsdb ${SRC})
-TARGET_LINK_LIBRARIES(tsdb tfs common tutil)
+TARGET_LINK_LIBRARIES(tsdb tfs common tutil cJson)
 
 IF (TD_TSDB_PLUGINS)
   TARGET_LINK_LIBRARIES(tsdb tsdbPlugins)