diff --git a/Cura/gui/preview3d.py b/Cura/gui/preview3d.py
index 8a1f740..43cb8c9 100644
--- a/Cura/gui/preview3d.py
+++ b/Cura/gui/preview3d.py
@@ -360,6 +360,9 @@ class PreviewGLCanvas(glcanvas.GLCanvas):
 			else:
 				self.offsetX += float(e.GetX() - self.oldX) * self.zoom / self.GetSize().GetHeight() * 2
 				self.offsetY -= float(e.GetY() - self.oldY) * self.zoom / self.GetSize().GetHeight() * 2
+			size = self.GetSizeTuple()
+			self.SetSize((size[0]+1, size[1]))
+			self.SetSize((size[0], size[1]))
 			self.Refresh()
 		if e.Dragging() and e.RightIsDown():
 			self.zoom += e.GetY() - self.oldY