WM_NAME is builtin atom

dwm.c

@@ -60,7 +60,7 @@
 enum { CurNormal, CurResize, CurMove, CurLast };        /* cursor */
 enum { ColBorder, ColFG, ColBG, ColLast };              /* color */
 enum { NetSupported, NetWMName, NetLast };              /* EWMH atoms */
-enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
+enum { WMProtocols, WMDelete, WMState, WMLast };        /* default atoms */
 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
        ClkClientWin, ClkRootWin, ClkLast };             /* clicks */
 
@@ -1326,7 +1326,6 @@ setup(void) {
 	/* init atoms */
 	wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
 	wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
-	wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
 	wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
 	netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
 	netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
@@ -1634,7 +1633,7 @@ updatesizehints(Client *c) {
 void
 updatetitle(Client *c) {
 	if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
-		gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
+		gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
 }
 
 void