diff --git a/src/kit/taosmigrate/taosmigrate.c b/src/kit/taosmigrate/taosmigrate.c
index 599cc493343f8f793cbd6b1d1c7c4618afa8174d..b80ca44a10c87c5c9102f6090e54ef8a32d736e5 100644
--- a/src/kit/taosmigrate/taosmigrate.c
+++ b/src/kit/taosmigrate/taosmigrate.c
@@ -40,7 +40,7 @@ struct arguments {
 static error_t parse_opt(int key, char *arg, struct argp_state *state) {
   struct arguments *arguments = state->input;
   switch (key) {
-    case 'w':
+    case 'r':
       arguments->dataDir = arg;
       break;
     case 'd':