diff --git a/lib/matplotlib/backends/backend_wx.py b/lib/matplotlib/backends/backend_wx.py
index 31773c0aa978..f1887a886576 100644
--- a/lib/matplotlib/backends/backend_wx.py
+++ b/lib/matplotlib/backends/backend_wx.py
@@ -1120,7 +1120,7 @@ def __init__(self, canvas):
                     -1,
                     bitmap=self._icon(f"{image_file}.png"),
                     bmpDisabled=wx.NullBitmap,
-                    label=text, shortHelp=text, longHelp=tooltip_text,
+                    label=text, shortHelp=tooltip_text,
                     kind=(wx.ITEM_CHECK if text in ["Pan", "Zoom"]
                           else wx.ITEM_NORMAL))
                 .Id)