Index: trunk/MagicSoft/Mars/mpointing/MHPointing.cc
===================================================================
--- trunk/MagicSoft/Mars/mpointing/MHPointing.cc	(revision 7887)
+++ trunk/MagicSoft/Mars/mpointing/MHPointing.cc	(revision 7971)
@@ -214,5 +214,13 @@
 void MHPointing::DrawGraph(TGraph &g, const char *y) const
 {
+    // This is not done automatically anymore since root 5.12/00
+    // and it is necessary to force a proper update of the axis.
     TH1 *h = g.GetHistogram();
+    if (h)
+    {
+        delete h;
+        g.SetHistogram(0);
+        h = g.GetHistogram();
+    }
     if (h)
     {