diff --git a/tests/update.TestCase b/tests/update.TestCase
index 03391c18..9c60adfd 100755
--- a/tests/update.TestCase
+++ b/tests/update.TestCase
@@ -647,6 +647,16 @@ class UpdateTest(unittest.TestCase):
         with self.assertRaises(fdroidserver.exception.FDroidException):
             fdroidserver.update.has_known_vulnerability('janus.apk')
 
+    def test_get_apk_icon_when_src_is_none(self):
+        config = dict()
+        fdroidserver.common.fill_config_defaults(config)
+        fdroidserver.common.config = config
+        fdroidserver.update.config = config
+
+        # pylint: disable=protected-access
+        icons_src = fdroidserver.update._get_apk_icons_src('urzip-release.apk', None)
+        assert icons_src == {}
+
 
 if __name__ == "__main__":
     parser = optparse.OptionParser()