diff --git a/Library/Homebrew/language/python.rb b/Library/Homebrew/language/python.rb
index 37808780d6..c078484589 100644
--- a/Library/Homebrew/language/python.rb
+++ b/Library/Homebrew/language/python.rb
@@ -85,6 +85,7 @@ module Language
       %W[
         -c
         #{shim}
+        --no-user-cfg
         install
         --prefix=#{prefix}
         --single-version-externally-managed