diff --git a/helper/communicator/config_test.go b/helper/communicator/config_test.go
index 029c9fe35..dc1bd965d 100644
--- a/helper/communicator/config_test.go
+++ b/helper/communicator/config_test.go
@@ -19,7 +19,7 @@ func TestConfigType(t *testing.T) {
 	}
 
 	if c.Type != "ssh" {
-		t.Fatal("bad: %#v", c)
+		t.Fatalf("bad: %#v", c)
 	}
 }