diff --git a/src/wrapper.c b/src/wrapper.c
index 7ecb3101..16f93274 100644
--- a/src/wrapper.c
+++ b/src/wrapper.c
@@ -148,7 +148,7 @@ void crypto_free(struct ssh_crypto_struct *crypto){
     return;
   }
 
-  SAFE_FREE(crypto->server_pubkey);
+  ssh_key_free(crypto->server_pubkey);
 
   cipher_free(crypto->in_cipher);
   cipher_free(crypto->out_cipher);