--- a/install.py	Wed Jul 11 19:17:56 2018 +0200
+++ b/install.py	Wed Jul 11 19:30:42 2018 +0200
@@ -1355,7 +1355,7 @@
         if message:
             print("Sorry, please install QScintilla2 and")
             print("its PyQt5/PyQt4 wrapper.")
-            print('Error: {0}'.format(msg))
+            print('Error: {0}'.format(message))
             exit(1)
     print("Found QScintilla2")