diff --git a/pkgs/development/ruby-modules/bundled-common/default.nix b/pkgs/development/ruby-modules/bundled-common/default.nix
index 1f31aec886a..16f1abe1a89 100644
--- a/pkgs/development/ruby-modules/bundled-common/default.nix
+++ b/pkgs/development/ruby-modules/bundled-common/default.nix
@@ -29,7 +29,7 @@ with  import ./functions.nix { inherit lib gemConfig; };
 let
   gemFiles = bundlerFiles args;
 
-  importedGemset = if builtins.typeOf gemFiles.gemset == "path"
+  importedGemset = if builtins.typeOf gemFiles.gemset != "set"
     then import gemFiles.gemset
     else gemFiles.gemset;