diff --git a/Library/Homebrew/cmd/audit.rb b/Library/Homebrew/cmd/audit.rb
index 3bb1d4fbb7..afc279c710 100644
--- a/Library/Homebrew/cmd/audit.rb
+++ b/Library/Homebrew/cmd/audit.rb
@@ -363,6 +363,10 @@ class FormulaAuditor
     if desc =~ /([Cc]ommand ?line)/
       problem "Description should use \"command-line\" instead of \"#{$1}\""
     end
+
+    if desc =~ %r[^([Aa]n?)\s]
+      problem "Please remove the indefinite article \"#{$1}\" from the beginning of the description"
+    end
   end
 
   def audit_homepage