--- a/dwm.c
+++ b/dwm.c
@@ -1464,6 +1464,7 @@
 		XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
 			PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
 		c->isfullscreen = 1;
+		if (system("pconfine-auto on &")) {}
 		c->oldstate = c->isfloating;
 		c->oldbw = c->bw;
 		c->bw = 0;
@@ -1474,6 +1475,7 @@
 		XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
 			PropModeReplace, (unsigned char*)0, 0);
 		c->isfullscreen = 0;
+		if (system("pconfine-auto off &")) {}
 		c->isfloating = c->oldstate;
 		c->bw = c->oldbw;
 		c->x = c->oldx;
@@ -1758,6 +1760,7 @@
 {
 	Monitor *m = c->mon;
 	XWindowChanges wc;
+	if (c->isfullscreen) { if (system("pconfine-auto off &")) {} }

 	detach(c);
 	detachstack(c);