diff --git a/oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/query/input/Duration.java b/oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/query/input/Duration.java
index e58736b13..e08160f47 100644
--- a/oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/query/input/Duration.java
+++ b/oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/query/input/Duration.java
@@ -49,7 +49,7 @@ public class Duration {
     }
 
     public long getEndTimestamp() {
-        return DurationUtils.INSTANCE.startTimeToTimestamp(step, end);
+        return DurationUtils.INSTANCE.endTimeToTimestamp(step, end);
     }
 
     public long getStartTimeBucketInSec() {