diff --git a/src/ChangeLog b/src/ChangeLog
index 7c3a29c5d862939b8f087a64489c85c5adf23203..d679a0ae9c968cb3db59de9aa3b359a70bf5fab0 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2013-09-22  Daniel Colascione  <dancol@dancol.org>
+
+	* xfns.c (x_get_monitor_attributes): Suppress unused variable
+	warning when compiling without a window system.
+
 2013-09-22  Daniel Colascione  <dancol@dancol.org>
 
 	* data.c (Qbool_vector_p): New symbol.
diff --git a/src/xfns.c b/src/xfns.c
index 38aa5b3bbfed72c8e4ba79785e3716ebd253f369..2b895642942f02d698b752c2d64b38930dce95dd 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -3949,6 +3949,8 @@ x_get_monitor_attributes (struct x_display_info *dpyinfo)
   Lisp_Object attributes_list = Qnil;
   Display *dpy = dpyinfo->display;
 
+  (void) dpy; /* Suppress unused variable warning.  */
+
 #ifdef HAVE_XRANDR
   int xrr_event_base, xrr_error_base;
   bool xrr_ok = false;