diff --git a/lib/matplotlib/backends/backend_wx.py b/lib/matplotlib/backends/backend_wx.py
index 66d68a6e31e3..9522a932179a 100644
--- a/lib/matplotlib/backends/backend_wx.py
+++ b/lib/matplotlib/backends/backend_wx.py
@@ -1639,7 +1639,7 @@ def draw_rubberband(self, event, x0, y0, x1, y1):
 
         if y1 < y0:
             y0, y1 = y1, y0
-        if x1 < y0:
+        if x1 < x0:
             x0, x1 = x1, x0
 
         w = x1 - x0
@@ -1771,7 +1771,7 @@ def draw_rubberband(self, x0, y0, x1, y1):
 
             if y1 < y0:
                 y0, y1 = y1, y0
-            if x1 < y0:
+            if x1 < x0:
                 x0, x1 = x1, x0
 
             w = x1 - x0