1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/crypto/nx/nx-aes-gcm.c b/drivers/crypto/nx/nx-aes-gcm.c
index c8109edc5cfb..6cca6c392b00 100644
--- a/drivers/crypto/nx/nx-aes-gcm.c
+++ b/drivers/crypto/nx/nx-aes-gcm.c
@@ -219,7 +219,7 @@ static int gcm_aes_nx_crypt(struct aead_request *req, int enc)
         if (enc)
                 NX_CPB_FDM(csbcpb) |= NX_FDM_ENDE_ENCRYPT;
         else
-                nbytes -= AES_BLOCK_SIZE;
+                nbytes -= crypto_aead_authsize(crypto_aead_reqtfm(req));
 
         csbcpb->cpb.aes_gcm.bit_length_data = nbytes * 8;