diff --git a/tests/army/community/cmdline/fullopt.py b/tests/army/community/cmdline/fullopt.py
index 39d1d581ed..a9a0b5fd56 100644
--- a/tests/army/community/cmdline/fullopt.py
+++ b/tests/army/community/cmdline/fullopt.py
@@ -91,7 +91,7 @@ class TDTestCase(TBase):
         # -C
         etool.exeBinFile("taosd", "-C")
         # -k 
-        rets = etool.runBinFile("taosd", "-C")
+        rets = etool.runBinFile("taosd", "-k")
         self.checkListNotEmpty(rets)
         # -V
         rets = etool.runBinFile("taosd", "-V")