diff --git a/core/rebus.cpp b/core/rebus.cpp
index 452c2b5..fb23c93 100755
--- a/core/rebus.cpp
+++ b/core/rebus.cpp
@@ -149,7 +149,9 @@ bool Rebus::CheckRebus()
 	if( IsAnswerOk(cur->session->rebus_item, cur->request->PostVar(L"rebus")) )
 		return true;
 
-	log << log1 << "Rebus: rebus has an incorrect answer" << logend;
+	log << log1 << "Rebus: rebus has an incorrect answer, expected: "
+		<< cur->session->rebus_item->answer << logend;
+
 	// don't add cur->session->spam_score when the rebus has incorrect answer
 	// a user could have made a mistake