diff --git a/projects/Chart/7/org/jfree/data/time/TimePeriodValues.java b/projects/Chart/7/org/jfree/data/time/TimePeriodValues.java
index 0a3e7a1..589c7ca 100644
--- a/projects/Chart/7/org/jfree/data/time/TimePeriodValues.java
+++ b/projects/Chart/7/org/jfree/data/time/TimePeriodValues.java
@@ -297,9 +297,9 @@ private void updateBounds(TimePeriod period, int index) {
         }
         
         if (this.maxMiddleIndex >= 0) {
-            long s = getDataItem(this.minMiddleIndex).getPeriod().getStart()
+            long s = getDataItem(this.maxMiddleIndex).getPeriod().getStart()
                 .getTime();
-            long e = getDataItem(this.minMiddleIndex).getPeriod().getEnd()
+            long e = getDataItem(this.maxMiddleIndex).getPeriod().getEnd()
                 .getTime();
             long maxMiddle = s + (e - s) / 2;
             if (middle > maxMiddle) {