diff --git a/config.def.h b/config.def.h
index cfbd514..1b31938 100644
--- a/config.def.h
+++ b/config.def.h
@@ -39,6 +39,8 @@ static const Rule rules[] = {
 	/* class      instance    title       tags mask     isfloating   monitor */
 	{ "firefox",  NULL,       NULL,       1 << 1,       0,           -1 },
 	{ "firefox",  NULL,       "Picture-in-Picture", 0,  1,           -1 },
+	{ "Signal",   NULL,       NULL,       1 << 3,       0,           -1 },
+	{ "vesktop",  NULL,       NULL,       1 << 3,       0,           -1 },
 };
 
 /* layout(s) */