diff --git a/src/libcrypto.c b/src/libcrypto.c
index ac950109..19065bd6 100644
--- a/src/libcrypto.c
+++ b/src/libcrypto.c
@@ -587,7 +587,11 @@ static void aes_ctr_encrypt(struct ssh_cipher_struct *cipher, void *in, void *ou
    * Same for num, which is being used to store the current offset in blocksize in CTR
    * function.
    */
+# if OPENSSL_VERSION_NUMBER >= 0x10100000L
+  CRYPTO_ctr128_encrypt(in, out, len, &cipher->aes_key->key, cipher->aes_key->IV, tmp_buffer, &num, (block128_f)AES_encrypt);
+# else
   AES_ctr128_encrypt(in, out, len, &cipher->aes_key->key, cipher->aes_key->IV, tmp_buffer, &num);
+# endif /* OPENSSL_VERSION_NUMBER >= 0x10100000L */
 }
 
 static void aes_ctr_cleanup(struct ssh_cipher_struct *cipher){