--- a/eric6/Network/IRC/IrcMessageEdit.py	Sun Sep 01 17:44:33 2019 +0200
+++ b/eric6/Network/IRC/IrcMessageEdit.py	Sun Sep 01 19:40:53 2019 +0200
@@ -13,8 +13,6 @@
 
 from E5Gui.E5LineEdit import E5LineEdit, E5ClearableLineEdit
 
-from Globals import qVersionTuple
-
 
 class IrcMessageEdit(E5ClearableLineEdit):
     """
@@ -77,10 +75,7 @@
         
         @param evt reference to the wheel event (QWheelEvent)
         """
-        if qVersionTuple() >= (5, 0, 0):
-            delta = evt.angleDelta().y()
-        else:
-            delta = evt.delta()
+        delta = evt.angleDelta().y()
         if delta > 0:
             self.__getHistory(True)
         elif delta < 0: