1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/tools/interfacer/default.nix b/pkgs/development/tools/interfacer/default.nix
index b7f568f4d2b8b..4358ee244896f 100644
--- a/pkgs/development/tools/interfacer/default.nix
+++ b/pkgs/development/tools/interfacer/default.nix
@@ -9,7 +9,7 @@ buildGoPackage rec {
   rev = "c20040233aedb03da82d460eca6130fcd91c629a";
 
   goPackagePath = "mvdan.cc/interfacer";
-  excludedPackages = ''check/testdata'';
+  excludedPackages = "check/testdata";
 
   src = fetchFromGitHub {
     inherit rev;