diff --git a/dwm.c b/dwm.c
index 96b43f7..3639165 100644
--- a/dwm.c
+++ b/dwm.c
@@ -1441,7 +1441,7 @@ setfocus(Client *c) {
 
 void
 setfullscreen(Client *c, Bool fullscreen) {
-	if(fullscreen) {
+	if(fullscreen && !c->isfullscreen) {
 		XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
 		                PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
 		c->isfullscreen = True;
@@ -1452,7 +1452,7 @@ setfullscreen(Client *c, Bool fullscreen) {
 		resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
 		XRaiseWindow(dpy, c->win);
 	}
-	else {
+	else if(!fullscreen && c->isfullscreen){
 		XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
 		                PropModeReplace, (unsigned char*)0, 0);
 		c->isfullscreen = False;