diff --git a/src/mpdu.c b/src/mpdu.c
index f2637841..0d5f7f7d 100644
--- a/src/mpdu.c
+++ b/src/mpdu.c
@@ -76,7 +76,7 @@ static bool validate_authentication_mgmt_mpdu(const struct mpdu *mpdu,
 
 	*offset += 6;
 
-	switch (mpdu->auth.algorithm) {
+	switch (L_LE16_TO_CPU(mpdu->auth.algorithm)) {
 	case MPDU_AUTH_ALGO_OPEN_SYSTEM:
 		return *offset <= len;
 	case MPDU_AUTH_ALGO_SHARED_KEY: