diff --git a/app/serializers/post_serializer.rb b/app/serializers/post_serializer.rb
index 7ddadfb2c..921341cf4 100644
--- a/app/serializers/post_serializer.rb
+++ b/app/serializers/post_serializer.rb
@@ -158,6 +158,10 @@ class PostSerializer < BasicPostSerializer
                         hidden: (sym == :vote),
                         can_act: scope.post_can_act?(object, sym, taken_actions: post_actions)}
 
+      if sym == :notify_user && scope.current_user.present? && scope.current_user == object.user
+        action_summary[:can_act] = false # Don't send a pm to yourself about your own post, silly
+      end
+
       # The following only applies if you're logged in
       if action_summary[:can_act] && scope.current_user.present?
         action_summary[:can_clear_flags] = scope.is_staff? && PostActionType.flag_types.values.include?(id)
diff --git a/spec/serializers/post_serializer_spec.rb b/spec/serializers/post_serializer_spec.rb
index ad955de03..e37a8fccc 100644
--- a/spec/serializers/post_serializer_spec.rb
+++ b/spec/serializers/post_serializer_spec.rb
@@ -36,6 +36,11 @@ describe PostSerializer do
       visible_actions_for(admin).sort.should == [:like,:notify_user,:spam,:vote]
     end
 
+    it "can't flag your own post to notify yourself" do
+      serializer = PostSerializer.new(post, scope: Guardian.new(post.user), root: false)
+      notify_user_action = serializer.actions_summary.find { |a| a[:id] == PostActionType.types[:notify_user] }
+      notify_user_action[:can_act].should == false
+    end
   end
 
   context "a post by a nuked user" do