diff --git a/src/window.c b/src/window.c
index 41fc8f73075..c27991154ba 100644
--- a/src/window.c
+++ b/src/window.c
@@ -2332,7 +2332,6 @@ and put SIZE columns in the first of the pair.")
 
   o = XWINDOW (window);
   fo = XFRAME (WINDOW_FRAME (o));
-  width = XFASTINT (o->width);
 
   if (NILP (size))
     {