diff --git a/collects/drracket/private/syncheck/gui.rkt b/collects/drracket/private/syncheck/gui.rkt
index 166b31a993..a31e677278 100644
--- a/collects/drracket/private/syncheck/gui.rkt
+++ b/collects/drracket/private/syncheck/gui.rkt
@@ -1216,7 +1216,7 @@ If the namespace does not, they are colored the unbound color.
                          (loop (send (send admin get-snip) get-editor))
                          #f)])))
               (cond
-                [window
+                [(and window (< -10000 x-off 10000) (< -10000 y-off 10000))
                  (define (c n) (inexact->exact (round n)))
                  (define-values (gx gy) (send window client->screen (c x-off) (c y-off)))
                  (values gx gy gx gy)]