diff --git a/pkgs/development/tools/circup/default.nix b/pkgs/development/tools/circup/default.nix
index b620fa20e46..71ac08d2676 100644
--- a/pkgs/development/tools/circup/default.nix
+++ b/pkgs/development/tools/circup/default.nix
@@ -40,7 +40,7 @@ python3.pkgs.buildPythonApplication rec {
   '';
 
   pythonImportsCheck = [
-    " circup "
+    "circup"
   ];
 
   meta = with lib; {