--- a/python/mozbuild/mozpack/test/test_chrome_manifest.py
+++ b/python/mozbuild/mozpack/test/test_chrome_manifest.py
@@ -42,17 +42,17 @@ class TestManifest(unittest.TestCase):
             'manifest pdfjs/chrome.manifest',
             'resource gre-resources toolkit/res/',
             'override chrome://global/locale/netError.dtd' +
             ' chrome://browser/locale/netError.dtd',
             '# Comment',
             'component {b2bba4df-057d-41ea-b6b1-94a10a8ede68} foo.js',
             'contract @mozilla.org/foo;1' +
             ' {b2bba4df-057d-41ea-b6b1-94a10a8ede68}',
-            'interfaces foo.xpt # Inline comment',
+            'interfaces foo.xpt',
             'binary-component bar.so',
             'category command-line-handler m-browser' +
             ' @mozilla.org/browser/clh;1' +
             ' application={ec8030f7-c20a-464f-9b0e-13a3a9e97384}',
             'style chrome://global/content/customizeToolbar.xul' +
             ' chrome://browser/skin/',
             'overlay chrome://global/content/viewSource.xul' +
             ' chrome://browser/content/viewSourceOverlay.xul',