diff --git a/Library/Homebrew/extend/ARGV.rb b/Library/Homebrew/extend/ARGV.rb
index dfea80f2e8..1802991dfc 100644
--- a/Library/Homebrew/extend/ARGV.rb
+++ b/Library/Homebrew/extend/ARGV.rb
@@ -185,7 +185,7 @@ module HomebrewArgvExtension
   def collect_build_flags
     build_flags = []
 
-    build_flags << "--HEAD" if build_head?
+    build_flags << "--HEAD" if include?("--HEAD")
     build_flags << "--universal" if build_universal?
     build_flags << "--build-bottle" if build_bottle?
     build_flags << "--build-from-source" if build_from_source?