diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index c2bef22c24..a7cea5cf84 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -333,10 +333,10 @@ class Formula
       install_type = :from_url
     else
       # Check if this is a name or pathname
-      path = Pathname.new(name)
-      if path.absolute?
-        # For absolute paths, just require the path
+      if name.include? "/"
+        # For paths, just require the path
         require name
+        path = Pathname.new(name)
         name = path.stem
         install_type = :from_path
         target_file = path.to_s