diff --git a/Library/Homebrew/requirements.rb b/Library/Homebrew/requirements.rb
index 94ea7d98c5..b5234d3b15 100644
--- a/Library/Homebrew/requirements.rb
+++ b/Library/Homebrew/requirements.rb
@@ -22,7 +22,7 @@ class XcodeDependency < Requirement
 
   def xcode_installed_version
     return false unless MacOS::Xcode.installed?
-    return true unless @version
+    return true unless @version.is_a? String
     MacOS::Xcode.version >= @version
   end