diff --git a/pkgs/development/python-modules/wheel/default.nix b/pkgs/development/python-modules/wheel/default.nix
index 3a3b5a4fb945..1b899b59897f 100644
--- a/pkgs/development/python-modules/wheel/default.nix
+++ b/pkgs/development/python-modules/wheel/default.nix
@@ -18,7 +18,7 @@ buildPythonPackage rec {
     name = "${pname}-${version}-source";
     extraPostFetch = ''
       cd $out
-      mv tests/testdata/unicode.dist/unicodedist/åäö_日本語.py \
+      mv tests/testdata/unicode.dist/unicodedist/åäö_日本語.py \
         tests/testdata/unicode.dist/unicodedist/æɐø_日本價.py
       patch -p1 < ${./0001-tests-Rename-a-a-o-_-.py-_-.py.patch}
     '';