diff --git a/config.h b/config.h
index cba5c52..80b04dd 100644
--- a/config.h
+++ b/config.h
@@ -26,7 +26,7 @@ static const Rule rules[] = {
 	/* class        instance    title       tags mask     isfloating   monitor */
 	{ "Nextcloud",    NULL,       NULL,       1 << 8,       1,           -1 },
 	{ "Mullvad VPN",  NULL,       NULL,       1 << 8,       1,           -1 },
-	{ "st",     "floating",       NULL,            1,       1,           -1 },
+	{ "st",     "floating",       NULL,         NULL,       1,           -1 },
 
 
 };