diff --git a/include/mbedtls/ssl_internal.h b/include/mbedtls/ssl_internal.h
index e4b767b7b..c141e8adc 100644
--- a/include/mbedtls/ssl_internal.h
+++ b/include/mbedtls/ssl_internal.h
@@ -220,7 +220,6 @@ struct mbedtls_ssl_handshake_params
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
 #if defined(MBEDTLS_SSL_ASYNC_PRIVATE_C)
     void *p_async_operation_ctx;        /*!< asynchronous operation context */
-    unsigned char *out_async_start;     /*!< pointer where the asynchronous operation must write in the output buffer */
 #endif /* MBEDTLS_SSL_ASYNC_PRIVATE_C */
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index daf87b96c..f6db3c715 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -2846,10 +2846,9 @@ static int ssl_prepare_server_key_exchange( mbedtls_ssl_context *ssl,
 
 #if defined(MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED) && \
     defined(MBEDTLS_SSL_ASYNC_PRIVATE_C)
-    if( ssl->handshake->out_async_start != NULL )
+    if( ssl->handshake->p_async_operation_ctx != NULL )
     {
         MBEDTLS_SSL_DEBUG_MSG( 2, ( "resuming signature operation" ) );
-        p = ssl->handshake->out_async_start;
         goto async_resume;
     }
 #endif /* defined(MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED) &&
@@ -3215,7 +3214,6 @@ curve_matching_done:
                 }
                 /* FALLTHROUGH */
             case MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS:
-                ssl->handshake->out_async_start = ssl->out_msg + ssl->out_msglen;
                 MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write server key exchange (pending)" ) );
                 return( MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS );
             default: