diff --git a/spec/lib/validators/post_validator_spec.rb b/spec/lib/validators/post_validator_spec.rb
index 8214619c0ce..22bed6b1123 100644
--- a/spec/lib/validators/post_validator_spec.rb
+++ b/spec/lib/validators/post_validator_spec.rb
@@ -231,7 +231,7 @@ describe PostValidator do
   end
 
   describe "unique_post_validator" do
-    fab!(:user) { Fabricate(:user, id: 999) }
+    fab!(:user) { Fabricate(:user) }
     fab!(:post) { Fabricate(:post, user: user, topic: topic) }
 
     before do