diff --git a/ChangeLog b/ChangeLog
index d562f5524..5b76dc7b9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -12,6 +12,7 @@
 	* src/plugins/Calendar.py: make calendar work in Windows
 	* src/GrampsLocale.py: make calendar work in Windows
 	* src/plugins/GraphViz.py: fix unicode encoding
+	* src/plugins/TimeLine.py: round all dates to nearest decade
 
 2006-05-21  Alex Roitman  <shura@gramps-project.org>
 	* src/GrampsDb/_GrampsBSDDB.py: Do not import unused module.
diff --git a/src/plugins/TimeLine.py b/src/plugins/TimeLine.py
index ecbc7eddc..17ab937d7 100644
--- a/src/plugins/TimeLine.py
+++ b/src/plugins/TimeLine.py
@@ -312,9 +312,14 @@ class TimeLine(Report.Report):
             if d:
                 low = min(low,d)
                 high = max(high,d)
-               
-        low = (low/10)*10
-        high = ((high+9)/10)*10
+
+        # round the dates to the nearest decade
+        low = int((low/10))*10
+        high = int(((high+9)/10))*10
+        
+        # Make sure the difference is a multiple of 50 so all year ranges land
+        # on a decade.
+        low -= 50 - ((high-low) % 50)
         
         if low == None:
             low = high