diff --git a/cameleer-server-app/src/main/java/com/cameleer/server/app/search/ClickHouseLogStore.java b/cameleer-server-app/src/main/java/com/cameleer/server/app/search/ClickHouseLogStore.java
index ce932c3e..a389e28e 100644
--- a/cameleer-server-app/src/main/java/com/cameleer/server/app/search/ClickHouseLogStore.java
+++ b/cameleer-server-app/src/main/java/com/cameleer/server/app/search/ClickHouseLogStore.java
@@ -122,7 +122,7 @@ public class ClickHouseLogStore implements LogIndex {
             baseParams.add(request.instanceId());
         }
 
-        if (request.instanceIds() != null && !request.instanceIds().isEmpty()) {
+        if (!request.instanceIds().isEmpty()) {
             String placeholders = String.join(", ", Collections.nCopies(request.instanceIds().size(), "?"));
             baseConditions.add("instance_id IN (" + placeholders + ")");
             for (String id : request.instanceIds()) {
@@ -289,7 +289,7 @@ public class ClickHouseLogStore implements LogIndex {
             params.add(request.instanceId());
         }
 
-        if (request.instanceIds() != null && !request.instanceIds().isEmpty()) {
+        if (!request.instanceIds().isEmpty()) {
             String placeholders = String.join(", ", Collections.nCopies(request.instanceIds().size(), "?"));
             conditions.add("instance_id IN (" + placeholders + ")");
             for (String id : request.instanceIds()) {