diff --git a/src/dispatch/bind_define.h b/src/dispatch/bind_define.h
index 69c5794..d77de53 100644
--- a/src/dispatch/bind_define.h
+++ b/src/dispatch/bind_define.h
@@ -1445,9 +1445,14 @@ int32_t viewcrossmon(const Arg *arg) {
 }
 
 int32_t tagcrossmon(const Arg *arg) {
-	if (!selmon->sel)
+	if (!selmon || !selmon->sel)
 		return 0;
 
+	if (regex_match(selmon->wlr_output->name, arg->v)) {
+		tag_client(arg, selmon->sel);
+		return 0;
+	}
+
 	tagmon(&(Arg){.ui = arg->ui, .i = UNDIR, .v = arg->v});
 	return 0;
 }