--- a/config.def.h	Wed Jul 08 18:59:20 2009 +0100
+++ b/config.def.h	Thu Jul 09 11:21:06 2009 +0100
@@ -14,7 +14,7 @@
 static const Bool topbar            = True;     /* False means bottom bar */
 
 /* monitor(s) symbols */
-static const char *monsyms[] = { "<1>", "<2>", "<3>", "<4>", "<5>" };
+static const char *monsyms[] = { "<1>", "<2>", "<3>", "<4>" };
 
 /* tagging */
 static const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };

--- a/dwm.c	Wed Jul 08 18:59:20 2009 +0100
+++ b/dwm.c	Thu Jul 09 11:21:06 2009 +0100
@@ -1690,6 +1690,8 @@
 	if(XineramaIsActive(dpy))
 		info = XineramaQueryScreens(dpy, &n);
 #endif /* XINERAMA */
+	if(n > LENGTH(monsyms))
+		n = LENGTH(monsyms);
 	/* allocate monitor(s) for the new geometry setup */
 	for(i = 0; i < n; i++) {
 		if(!(m = (Monitor *)malloc(sizeof(Monitor))))