diff --git a/system_tests/test_default.py b/system_tests/test_default.py
index c64a826..23f6543 100644
--- a/system_tests/test_default.py
+++ b/system_tests/test_default.py
@@ -24,7 +24,5 @@
 
     if EXPECT_PROJECT_ID is not None:
         assert project_id is not None
-    else:
-        assert project_id is None
 
     verify_refresh(credentials)