diff --git a/web/src/main/java/com/navercorp/pinpoint/web/scatter/ScatterData.java b/web/src/main/java/com/navercorp/pinpoint/web/scatter/ScatterData.java
index 17775b824f66..b7f9909c1315 100644
--- a/web/src/main/java/com/navercorp/pinpoint/web/scatter/ScatterData.java
+++ b/web/src/main/java/com/navercorp/pinpoint/web/scatter/ScatterData.java
@@ -136,10 +136,16 @@ public Map<Long, DotGroups> getSortedScatterDataMap() {
 
 
     public long getOldestAcceptedTime() {
+        if (oldestAcceptedTime == Long.MAX_VALUE) {
+            return -1;
+        }
         return oldestAcceptedTime;
     }
 
     public long getLatestAcceptedTime() {
+        if (latestAcceptedTime == Long.MIN_VALUE) {
+            return -1;
+        }
         return latestAcceptedTime;
     }