diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index 33fbf84f2e..e7027b73b8 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -316,6 +316,7 @@ class FormulaInstaller
     fi.options |= inherited_options
     fi.ignore_deps = true
     fi.show_header = false
+    fi.build_from_source = build_from_source
     fi.prelude
     oh1 "Installing #{f} dependency: #{Tty.green}#{dep.name}#{Tty.reset}"
     outdated_keg.unlink if outdated_keg