diff --git a/gui/pygauge.py b/gui/pygauge.py
index 5c95c73e9..df4e8752c 100644
--- a/gui/pygauge.py
+++ b/gui/pygauge.py
@@ -289,7 +289,7 @@ class PyGauge(wx.PyWindow):
             r.width = w
             r.height = r.height/2+1
 
-            pv = self._percentage
+            pv = value
 
             if pv <= 100:
                 c1 = map(lambda t: sum(t), zip(c1, (0,pv/3,-pv,0)))