diff --git a/gnu/packages/messaging.scm b/gnu/packages/messaging.scm
index a66099a371..4d17f8dbd4 100644
--- a/gnu/packages/messaging.scm
+++ b/gnu/packages/messaging.scm
@@ -3183,11 +3183,6 @@ share/zulip/integrations or in lib/<...>/site-packages/integrations:
                     " and not "))
       #:phases
       #~(modify-phases %standard-phases
-          (add-after 'unpack 'fix-pytest-config
-            (lambda _
-              (substitute* "pyproject.toml"
-                ((" --cov=zulipterminal --no-cov-on-fail")
-                 ""))))
           (add-after 'unpack 'relax-requirements
             (lambda _
               (substitute* "setup.py"