diff --git a/include/query_processor.h b/include/query_processor.h
index f5e42b3bf5..75c36b884c 100644
--- a/include/query_processor.h
+++ b/include/query_processor.h
@@ -198,9 +198,6 @@ class Query_Processor_Output {
 		if (comment) { // #643
 			free(comment);
 		}
-		if (comment) { // #643
-			free(comment);
-		}
 	}
 };