diff --git a/README.md b/README.md
index b58163e..ab24b36 100644
--- a/README.md
+++ b/README.md
@@ -56,4 +56,5 @@ and (re)compiling the source code.
 Most patches can be found on the suckless website: [https://dwm.suckless.org/patches/]
 
 * [actualfullscreen](https://dwm.suckless.org/patches/actualfullscreen/) - Actually toggle fullscreen for a window, instead of toggling the status bar and the monocle layout
+* [alwaysfullscreen](https://dwm.suckless.org/patches/alwaysfullscreen/) - Do not allow the focus to drift from the active fullscreen client when using focusstack()
 * [fixborders](https://dwm.suckless.org/patches/alpha/) - Make borders opaque
diff --git a/dwm.c b/dwm.c
index 473f421..2bf859e 100644
--- a/dwm.c
+++ b/dwm.c
@@ -836,7 +836,7 @@ focusstack(const Arg *arg)
 {
 	Client *c = NULL, *i;
 
-	if (!selmon->sel)
+	if (!selmon->sel || selmon->sel->isfullscreen)
 		return;
 	if (arg->i > 0) {
 		for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
diff --git a/patches/dwm-alwaysfullscreen-6.1.diff b/patches/dwm-alwaysfullscreen-6.1.diff
new file mode 100644
index 0000000..19882e6
--- /dev/null
+++ b/patches/dwm-alwaysfullscreen-6.1.diff
@@ -0,0 +1,13 @@
+diff --git a/dwm.c b/dwm.c
+index 0362114..a5cab76 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -847,7 +847,7 @@ focusstack(const Arg *arg)
+ {
+ 	Client *c = NULL, *i;
+ 
+-	if (!selmon->sel)
++	if (!selmon->sel || selmon->sel->isfullscreen)
+ 		return;
+ 	if (arg->i > 0) {
+ 		for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);