diff --git a/tests/public_benchmark/ldbc/test_cases/queries/short_query_2.oc b/tests/public_benchmark/ldbc/test_cases/queries/short_query_2.oc
index a48e206c7..6389e77f6 100644
--- a/tests/public_benchmark/ldbc/test_cases/queries/short_query_2.oc
+++ b/tests/public_benchmark/ldbc/test_cases/queries/short_query_2.oc
@@ -3,7 +3,7 @@ MATCH (:Person {id:"933"})<-[:HAS_CREATOR]-(m)-[:REPLY_OF*0..]->(p:Post)
 MATCH (p)-[:HAS_CREATOR]->(c)
 RETURN
   m.id as messageId,
-  CASE m.content IS null
+  CASE m.content IS NOT null
     WHEN true THEN m.content
     ELSE m.imageFile
   END AS messageContent,
diff --git a/tests/public_benchmark/ldbc/test_cases/queries/short_query_4.oc b/tests/public_benchmark/ldbc/test_cases/queries/short_query_4.oc
index e04a7ae33..d2eeb5bfa 100644
--- a/tests/public_benchmark/ldbc/test_cases/queries/short_query_4.oc
+++ b/tests/public_benchmark/ldbc/test_cases/queries/short_query_4.oc
@@ -1,7 +1,7 @@
 // Message Content
 MATCH (m:Message {id:"1236950581249"})
 RETURN
-  CASE m.content IS null
+  CASE m.content IS NOT null
     WHEN true THEN m.content
     ELSE m.imageFile
   END AS messageContent,