--- a/sys/bus/iicbus/iicsmb.c
+++ b/sys/bus/iicbus/iicsmb.c
@@ -240,7 +240,8 @@
 		break;
 
 	default:
-		panic("%s: unknown event (%d)!", __func__, event);
+		kprintf("%s: unknown event (%d)!\n", __func__, event);
+		break;
 	}
 
 	return (0);