diff --git a/lib/mittsu/renderers/glfw_lib.rb b/lib/mittsu/renderers/glfw_lib.rb
index 9454339c..e4159b74 100644
--- a/lib/mittsu/renderers/glfw_lib.rb
+++ b/lib/mittsu/renderers/glfw_lib.rb
@@ -36,11 +36,11 @@ class MacOS < GenericLib::Base
                       '/opt/homebrew/**']
 
       def path
-        File.dirname(match)
+        File.dirname(match.to_s)
       end
 
       def file
-        File.basename(match)
+        File.basename(match.to_s)
       end
 
       private