1 files changed, 3 insertions, 2 deletions

diff --git a/src/lib/libcrypto/evp/pmeth_gn.c b/src/lib/libcrypto/evp/pmeth_gn.c
index 5d74161a09..4651c81370 100644
--- a/src/lib/libcrypto/evp/pmeth_gn.c
+++ b/src/lib/libcrypto/evp/pmeth_gn.c
@@ -199,7 +199,7 @@ int EVP_PKEY_CTX_get_keygen_info(EVP_PKEY_CTX *ctx, int idx)
         }
 
 EVP_PKEY *EVP_PKEY_new_mac_key(int type, ENGINE *e,
-                                unsigned char *key, int keylen)
+                                const unsigned char *key, int keylen)
         {
         EVP_PKEY_CTX *mac_ctx = NULL;
         EVP_PKEY *mac_key = NULL;
@@ -209,7 +209,8 @@ EVP_PKEY *EVP_PKEY_new_mac_key(int type, ENGINE *e,
         if (EVP_PKEY_keygen_init(mac_ctx) <= 0)
                 goto merr;
         if (EVP_PKEY_CTX_ctrl(mac_ctx, -1, EVP_PKEY_OP_KEYGEN,
-                                EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key) <= 0)
+                                EVP_PKEY_CTRL_SET_MAC_KEY,
+                                keylen, (void *)key) <= 0)
                 goto merr;
         if (EVP_PKEY_keygen(mac_ctx, &mac_key) <= 0)
                 goto merr;