diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index 5ef6660fd5..1e6903be62 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -560,6 +560,8 @@ class FormulaInstaller
     return unless formula.plist
     formula.plist_path.atomic_write(formula.plist)
     formula.plist_path.chmod 0644
+    log = formula.var/"log"
+    log.mkpath if formula.plist.include? log.to_s
   rescue Exception => e
     onoe "Failed to install plist file"
     ohai e, e.backtrace if debug?