diff --git a/tests/test_gcloud.py b/tests/test_gcloud.py
index cacb44d3..5d7352f1 100644
--- a/tests/test_gcloud.py
+++ b/tests/test_gcloud.py
@@ -536,7 +536,7 @@ def test_storage_save_gzipped(self, *args):
                 retry=DEFAULT_RETRY,
                 size=11,
                 predefined_acl=None,
-                content_type="application/javascript",
+                content_type="text/javascript",
             )
         finally:
             patcher.stop()