diff --git a/tests_with_gitaly/comparison.py b/tests_with_gitaly/comparison.py
index cb76ad344b9b845cd1511f8ae3a562dfbcb201c2_dGVzdHNfd2l0aF9naXRhbHkvY29tcGFyaXNvbi5weQ==..6fc60196cd92c37683ed951fab89054bcc4cb1f4_dGVzdHNfd2l0aF9naXRhbHkvY29tcGFyaXNvbi5weQ== 100644
--- a/tests_with_gitaly/comparison.py
+++ b/tests_with_gitaly/comparison.py
@@ -346,8 +346,9 @@
         assert concatenator(hg_resps) == concatenator(git_resps)
 
         for hg_resp, git_resp in zip(hg_resps, git_resps):
-            fields_remover(hg_resp)
-            fields_remover(git_resp)
+            if fields_remover is not None:
+                fields_remover(hg_resp)
+                fields_remover(git_resp)
             assert hg_resp == git_resp
 
         return original_first_chunks