diff --git a/common/cryptorf/cryptolib.c b/common/cryptorf/cryptolib.c
index bf597317b..a59f4109a 100644
--- a/common/cryptorf/cryptolib.c
+++ b/common/cryptorf/cryptolib.c
@@ -307,7 +307,7 @@ static void cm_crypt(const CryptoAction ca, const uint8_t offset, const uint8_t
     }
 }
 
-void cm_encrypt(const uint8_t offset, const uint8_t len, const uint8_t *ct, uint8_t *pt, crypto_state s) {
+void cm_encrypt(const uint8_t offset, const uint8_t len, const uint8_t *pt, uint8_t *ct, crypto_state s) {
     next_n(true, 5, 0, s);
     next(true, 0, s);
     cm_crypt(CA_ENCRYPT, offset, len, ct, pt, s);