diff --git a/pylot/RELEASE-VERSION b/pylot/RELEASE-VERSION
index dc5ac6e8..9515eb1e 100644
--- a/pylot/RELEASE-VERSION
+++ b/pylot/RELEASE-VERSION
@@ -1 +1 @@
-b061-dirty
+8e83-dirty
diff --git a/pylot/core/util/widgets.py b/pylot/core/util/widgets.py
index 33f4a79c..60257c90 100644
--- a/pylot/core/util/widgets.py
+++ b/pylot/core/util/widgets.py
@@ -488,8 +488,8 @@ class WaveformWidgetPG(QtGui.QWidget):
         plots = []
 
         try:
-            self.plotWidget.getPlotItem().vb.setLimits(xMin=wfstart,
-                                                       xMax=wfend,
+            self.plotWidget.getPlotItem().vb.setLimits(xMin=float(0),
+                                                       xMax=float(wfend-wfstart),
                                                        yMin=-0.5,
                                                        yMax=len(nsc)+0.5)
         except:
@@ -533,11 +533,11 @@ class WaveformWidgetPG(QtGui.QWidget):
 
     def setXLims(self, lims):
         vb = self.plotWidget.getPlotItem().getViewBox()
-        vb.setXRange(lims[0], lims[1], padding=0)
+        vb.setXRange(float(lims[0]), float(lims[1]), padding=0)
 
     def setYLims(self, lims):
         vb = self.plotWidget.getPlotItem().getViewBox()
-        vb.setYRange(lims[0], lims[1], padding=0)
+        vb.setYRange(float(lims[0]), float(lims[1]), padding=0)
 
     def setYTickLabels(self, pos, labels):
         ticks = zip(pos, labels)