diff --git a/cli/app/app.go b/cli/app/app.go
index 389722c2..26370b8b 100644
--- a/cli/app/app.go
+++ b/cli/app/app.go
@@ -74,6 +74,10 @@ func validateFlags(c *cli.Context, opt *kobject.ConvertOptions) {
 	if len(dabFile) > 0 && c.GlobalIsSet("file") {
 		logrus.Fatalf("Error: 'compose' file and 'dab' file cannot be specified at the same time")
 	}
+
+	if len(c.Args()) != 0 {
+		logrus.Fatal("Unknown Argument(s): ", strings.Join(c.Args(), ","))
+	}
 }
 
 func validateControllers(opt *kobject.ConvertOptions) {
diff --git a/script/test/cmd/tests.sh b/script/test/cmd/tests.sh
index 08891d52..8edb7a25 100755
--- a/script/test/cmd/tests.sh
+++ b/script/test/cmd/tests.sh
@@ -72,4 +72,10 @@ convert::expect_success_and_warning "kompose --provider=openshift -f $KOMPOSE_RO
 # kubernetes test
 convert::expect_success_and_warning "kompose -f $KOMPOSE_ROOT/script/test/fixtures/envvars-separators/docker-compose.yml convert --stdout" "$KOMPOSE_ROOT/script/test/fixtures/envvars-separators/output-k8s.json"
 
+######
+# Tests related to unknown arguments with cli commands
+convert::expect_failure "kompose up $KOMPOSE_ROOT/script/test/fixtures/gitlab/docker-compose.yml" "Unknown Argument docker-gitlab.yml"
+convert::expect_failure "kompose down $KOMPOSE_ROOT/script/test/fixtures/gitlab/docker-compose.yml" "Unknown Argument docker-gitlab.yml"
+convert::expect_failure "kompose convert $KOMPOSE_ROOT/script/test/fixtures/gitlab/docker-compose.yml" "Unknown Argument docker-gitlab.yml"
+
 exit $EXIT_STATUS