1 files changed, 1 insertions, 1 deletions

diff --git a/src/window.c b/src/window.c
index 721b4d98477..7fd66057ad2 100644
--- a/src/window.c
+++ b/src/window.c
@@ -4854,7 +4854,7 @@ specifies the window to scroll.  This takes precedence over
   else
     {
       if (CONSP (arg))
-        arg = Fcar (arg);
+        arg = XCAR (arg);
       CHECK_NUMBER (arg);
       window_scroll (window, XINT (arg), 0, 1);
     }