diff --git a/bin/imbecile b/bin/imbecile
index c5d6ab8..96cbee1 100755
--- a/bin/imbecile
+++ b/bin/imbecile
@@ -2,4 +2,4 @@
 
 require "imbecile"
 
-Imbecile::CLI.run(ARGV.dup)
+exit Imbecile::CLI.run(ARGV.dup)
diff --git a/lib/imbecile.rb b/lib/imbecile.rb
index 8d13ee3..b095383 100644
--- a/lib/imbecile.rb
+++ b/lib/imbecile.rb
@@ -11,6 +11,7 @@ module Imbecile
       unless grammar.load(input_file)
         return 2
       end
+      return 0
     end
 
   end