diff --git a/src/client/src/tscSystem.c b/src/client/src/tscSystem.c
index d2dcf041fb3164c52eff05a5a599d3bc4025c5af..944b85e996db3364181d9a2ce4132e827cc3f406 100644
--- a/src/client/src/tscSystem.c
+++ b/src/client/src/tscSystem.c
@@ -47,7 +47,7 @@ int32_t    tscNumOfObj = 0;         // number of sqlObj in current process.
 static void  *tscCheckDiskUsageTmr;
 void      *tscRpcCache;            // cache to keep rpc obj
 int32_t    tscNumOfThreads = 1;     // num of rpc threads
-char       tscLogFileName[12] = "taoslog";
+char       tscLogFileName[] = "taoslog";
 int        tscLogFileNum = 10;
 
 static pthread_mutex_t rpcObjMutex; // mutex to protect open the rpc obj concurrently
diff --git a/src/kit/shell/src/shellWindows.c b/src/kit/shell/src/shellWindows.c
index 9aab9f49cd1be5051f28e3c69887bd8766e8af75..0133caf997f60a17748a536371479c11b354888d 100644
--- a/src/kit/shell/src/shellWindows.c
+++ b/src/kit/shell/src/shellWindows.c
@@ -250,14 +250,15 @@ void shellParseArgument(int argc, char *argv[], SShellArguments *arguments) {
   if (args.cloudDsn == NULL) {
       if (args.cloud) {
           args.cloudDsn = getenv("TDENGINE_CLOUD_DSN");
-          if (args.cloudDsn[strlen(args.cloudDsn) - 1] == '\"') {
-              args.cloudDsn[strlen(args.cloudDsn) - 1] = '\0';
-          }
-          if (args.cloudDsn[0] == '\"') {
-              args.cloudDsn += 1;
-          }
           if (args.cloudDsn == NULL) {
               args.cloud = false;
+          } else {
+              if (args.cloudDsn[strlen(args.cloudDsn) - 1] == '\"') {
+                  args.cloudDsn[strlen(args.cloudDsn) - 1] = '\0';
+              }
+              if (args.cloudDsn[0] == '\"') {
+                  args.cloudDsn += 1;
+              }
           }
       }
   } else {
@@ -434,4 +435,4 @@ int tcpConnect(char* host, int iport) {
         return 1;
     }
     return 0;
-}
\ No newline at end of file
+}