From d9f0da5a7c8679095f2716fdc9cd6880855fc159 Mon Sep 17 00:00:00 2001
From: Jeffrey Nichols <jsnichols@suprocktech.com>
Date: Thu, 27 Jun 2019 14:45:37 -0400
Subject: [PATCH] Fix for AxisItem using old scale to create label

---
 pyqtgraph/graphicsItems/AxisItem.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pyqtgraph/graphicsItems/AxisItem.py b/pyqtgraph/graphicsItems/AxisItem.py
index b34052ae..3a92e2b1 100644
--- a/pyqtgraph/graphicsItems/AxisItem.py
+++ b/pyqtgraph/graphicsItems/AxisItem.py
@@ -448,11 +448,11 @@ class AxisItem(GraphicsWidget):
             if self.labelUnits == '' and prefix in ['k', 'm']:  ## If we are not showing units, wait until 1e6 before scaling.
                 scale = 1.0
                 prefix = ''
+            self.autoSIPrefixScale = scale
             self.setLabel(unitPrefix=prefix)
         else:
-            scale = 1.0
+            self.autoSIPrefixScale = 1.0
 
-        self.autoSIPrefixScale = scale
         self.picture = None
         self.update()