diff --git a/wolfssl/openssl/aes.h b/wolfssl/openssl/aes.h
index 9aff9f38d..841421a41 100644
--- a/wolfssl/openssl/aes.h
+++ b/wolfssl/openssl/aes.h
@@ -41,7 +41,7 @@
 #endif
 
 
-typedef Aes AES_KEY;
+typedef struct Aes AES_KEY;
 
 WOLFSSL_API void wolfSSL_AES_set_encrypt_key
     (const unsigned char *, const int bits, AES_KEY *);