diff -paur dwm-6.0/dwm.c dwm-6.0.new/dwm.c
--- dwm-6.0/dwm.c	2012-01-24 00:24:48.083423569 +0100
+++ dwm-6.0.new/dwm.c	2012-01-24 00:55:54.869440257 +0100
@@ -1533,10 +1533,14 @@ setfullscreen(Client *c, Bool fullscreen
 		XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
 		                PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
 		c->isfullscreen = True;
-		c->oldstate = c->isfloating;
+		//taken from togglebar
+		selmon->showbar = !selmon->showbar;
+		updatebarpos(selmon);
+		XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
+		arrange(selmon);
+		//
 		c->oldbw = c->bw;
 		c->bw = 0;
-		c->isfloating = True;
 		resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
 		XRaiseWindow(dpy, c->win);
 	}
@@ -1544,7 +1548,12 @@ setfullscreen(Client *c, Bool fullscreen
 		XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
 		                PropModeReplace, (unsigned char*)0, 0);
 		c->isfullscreen = False;
-		c->isfloating = c->oldstate;
+		//taken from togglebar
+		selmon->showbar = !selmon->showbar;
+		updatebarpos(selmon);
+		XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
+		arrange(selmon);
+		//
 		c->bw = c->oldbw;
 		c->x = c->oldx;
 		c->y = c->oldy;