diff --git a/Library/Homebrew/language/python.rb b/Library/Homebrew/language/python.rb
index 312399ca66..431a0ed934 100644
--- a/Library/Homebrew/language/python.rb
+++ b/Library/Homebrew/language/python.rb
@@ -365,7 +365,7 @@ module Language
         def pip_install(targets, build_isolation: true)
           targets = Array(targets)
           targets.each do |t|
-            if t.is_a?(Resource) && t.url.end_with?("-none-any.whl")
+            if t.is_a?(Resource) && t.url&.end_with?("-none-any.whl")
               t.stage { do_install(Pathname.pwd/t.downloader.basename, build_isolation:) }
             elsif t.is_a?(Resource)
               t.stage { do_install(Pathname.pwd, build_isolation:) }