1 files changed, 1 insertions, 2 deletions
diff --git a/actionpack/lib/action_dispatch/http/request.rb b/actionpack/lib/action_dispatch/http/request.rb
index 6757a53bd1..8cea17c7a6 100644
--- a/actionpack/lib/action_dispatch/http/request.rb
+++ b/actionpack/lib/action_dispatch/http/request.rb
@@ -271,13 +271,12 @@ module ActionDispatch
         case v
         when Array
           v.grep(Hash) { |x| deep_munge(x) }
+          v.compact!
         when Hash
           deep_munge(v)
         end
       end
 
-      keys = hash.keys.find_all { |k| hash[k] == [nil] }
-      keys.each { |k| hash[k] = nil }
       hash
     end