diff --git a/checks/impure/flake-module.nix b/checks/impure/flake-module.nix
index 83183266f..71a3446a3 100644
--- a/checks/impure/flake-module.nix
+++ b/checks/impure/flake-module.nix
@@ -30,7 +30,7 @@
         # this disables dynamic dependency loading in clan-cli
         export CLAN_NO_DYNAMIC_DEPS=1
 
-        nix develop "$ROOT#clan-cli" -c bash -c "TMPDIR=/tmp python -m pytest -s -m impure ./tests $@"
+        nix develop "$ROOT#clan-cli" -c bash -c "TMPDIR=/tmp python -m pytest -m impure ./tests $@"
       '';
     };
 }