From bb2ecd033c5a31da14e92472181dcae1f7eb0827 Mon Sep 17 00:00:00 2001
From: Luke Campagnola <luke.campagnola@gmail.com>
Date: Fri, 18 Oct 2013 15:10:44 -0400
Subject: [PATCH] minor fix

---
 pyqtgraph/graphicsItems/AxisItem.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pyqtgraph/graphicsItems/AxisItem.py b/pyqtgraph/graphicsItems/AxisItem.py
index 93efb45c..bfc8644a 100644
--- a/pyqtgraph/graphicsItems/AxisItem.py
+++ b/pyqtgraph/graphicsItems/AxisItem.py
@@ -320,6 +320,7 @@ class AxisItem(GraphicsWidget):
         (unit string) is provided to display on the label.
         """
         self.autoSIPrefix = enable
+        self.updateAutoSIPrefix()
         
     def updateAutoSIPrefix(self):
         if self.label.isVisible():