diff --git a/net/ieee802154/6lowpan/rx.c b/net/ieee802154/6lowpan/rx.c
index ee179380a766..b34d050c9687 100644
--- a/net/ieee802154/6lowpan/rx.c
+++ b/net/ieee802154/6lowpan/rx.c
@@ -240,7 +240,7 @@ static inline bool lowpan_is_reserved(u8 dispatch)
 	return ((dispatch >= 0x44 && dispatch <= 0x4F) ||
 		(dispatch >= 0x51 && dispatch <= 0x5F) ||
 		(dispatch >= 0xc8 && dispatch <= 0xdf) ||
-		(dispatch >= 0xe8 && dispatch <= 0xff));
+		dispatch >= 0xe8);
 }
 
 /* lowpan_rx_h_check checks on generic 6LoWPAN requirements