diff --git a/src/kit/shell/src/shellEngine.c b/src/kit/shell/src/shellEngine.c
index ecda6912c3c287a59ef8eebad4935c382949f59e..116209b78448156023c7b87eae6913ace3fa0bf9 100644
--- a/src/kit/shell/src/shellEngine.c
+++ b/src/kit/shell/src/shellEngine.c
@@ -255,7 +255,7 @@ void shellRunCommandOnServer(TAOS *con, char command[]) {
     return;
   }
 
-  if (regex_match(command, "^\\s*use\\s+[a-zA-Z0-9]+\\s*;\\s*$", REG_EXTENDED | REG_ICASE)) {
+  if (regex_match(command, "^\\s*use\\s+[a-zA-Z0-9_]+\\s*;\\s*$", REG_EXTENDED | REG_ICASE)) {
     fprintf(stdout, "Database changed.\n\n");
     fflush(stdout);
     return;