diff --git a/include/cryb/aes.h b/include/cryb/aes.h
index d2a368a..999a984 100644
--- a/include/cryb/aes.h
+++ b/include/cryb/aes.h
@@ -52,7 +52,6 @@ extern cipher_algorithm aes192_cipher;
 extern cipher_algorithm aes256_cipher;
 
 typedef struct {
-	int	 mode;
 	int	 nr;
 	uint32_t rk[68];
 } aes_ctx;
diff --git a/lib/cipher/cryb_aes.c b/lib/cipher/cryb_aes.c
index df4cde3..abc1e96 100644
--- a/lib/cipher/cryb_aes.c
+++ b/lib/cipher/cryb_aes.c
@@ -581,8 +581,7 @@ aes_init(aes_ctx *ctx, cipher_mode mode, const uint8_t *key, size_t keylen)
 	assert(mode == CIPHER_MODE_ENCRYPT || mode == CIPHER_MODE_DECRYPT);
 	assert(keylen == 16 || keylen == 24 || keylen == 32);
 	memset(ctx, 0, sizeof *ctx);
-	ctx->mode = mode;
-	if (ctx->mode == CIPHER_MODE_DECRYPT)
+	if (mode == CIPHER_MODE_DECRYPT)
 		aes_setkey_dec(ctx, key, keylen);
 	else
 		aes_setkey_enc(ctx, key, keylen);