diff --git a/sys/dev/syscons/syscons.c b/sys/dev/syscons/syscons.c
index ebaa945759d..b8f328ee34c 100644
--- a/sys/dev/syscons/syscons.c
+++ b/sys/dev/syscons/syscons.c
@@ -3562,6 +3562,10 @@ next_code:
 	    /* goto next_code */
 	} else {
 	    /* regular keys (maybe MKEY is set) */
+#if !defined(SC_DISABLE_KDBKEY) && defined(KDB)
+	    if (enable_kdbkey)
+		kdb_alt_break(c, &sc->sc_altbrk);
+#endif
 	    if (!(sc->flags & SC_SCRN_BLANKED))
 		return c;
 	}
diff --git a/sys/dev/syscons/syscons.h b/sys/dev/syscons/syscons.h
index a23f88474a3..79f531bd47a 100644
--- a/sys/dev/syscons/syscons.h
+++ b/sys/dev/syscons/syscons.h
@@ -266,6 +266,9 @@ typedef struct sc_softc {
 	u_char		cursor_char;
 	u_char		mouse_char;
 
+#ifdef KDB
+	int		sc_altbrk;
+#endif
 } sc_softc_t;
 
 /* virtual screen */