diff --git a/demo_test/cmd_client/Makefile b/demo_test/cmd_client/Makefile
index 4c9a95e..c9f9579 100644
--- a/demo_test/cmd_client/Makefile
+++ b/demo_test/cmd_client/Makefile
@@ -12,6 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-cmd_cl:
+cmd_cl: cmd_cl.go
 	go build -i -v -o $@