diff --git a/rendercanvas/wx.py b/rendercanvas/wx.py
index f785c51..1411c7f 100644
--- a/rendercanvas/wx.py
+++ b/rendercanvas/wx.py
@@ -355,8 +355,13 @@ def _rc_set_logical_size(self, width, height):
         parent = self.Parent
         if isinstance(parent, WxRenderCanvas):
             parent.SetSize(width, height)
-        else:
+        elif parent is not None:
             self.SetSize(width, height)
+        else:
+            # The widget has no parent, likely because its going to inserted in a GUI later.
+            # This method is likely called from _final_canvas_init and if we call self.SetSize() it will likely error/segfault.
+            # See https://github.com/pygfx/rendercanvas/issues/91
+            pass
 
     def _rc_close(self):
         self._is_closed = True