diff --git a/exwm-layout.el b/exwm-layout.el
index b74f512..7642598 100644
--- a/exwm-layout.el
+++ b/exwm-layout.el
@@ -117,7 +117,7 @@
   (with-current-buffer (exwm--id->buffer id)
     (unless (or (exwm-layout--iconic-state-p)
                 (and exwm--floating-frame
-                     (eq #xffffffff exwm--desktop)))
+                     (eq 4294967295. exwm--desktop)))
       (exwm--log "Hide #x%x" id)
       (when exwm--floating-frame
         (let* ((container (frame-parameter exwm--floating-frame
diff --git a/exwm.el b/exwm.el
index 195ca7b..17f73d8 100644
--- a/exwm.el
+++ b/exwm.el
@@ -154,7 +154,7 @@
       (when reply
         (setq desktop (slot-value reply 'value))
         (cond
-         ((eq desktop #xffffffff)
+         ((eq desktop 4294967295.)
           (unless (or (not exwm--floating-frame)
                       (eq exwm--frame exwm-workspace--current)
                       (and exwm--desktop