diff --git a/platform/src/ssl_stream.cpp b/platform/src/ssl_stream.cpp
index 6e81a55..6537eb2 100644
--- a/platform/src/ssl_stream.cpp
+++ b/platform/src/ssl_stream.cpp
@@ -486,9 +486,9 @@ void peek_client_hello_ctx_free(struct peek_client_hello_ctx * _ctx)
 	free(_ctx);
 }
 
-void peek_client_hello_ctx_free(struct promise * p)
+void peek_client_hello_ctx_free_cb(void * p)
 {
-	struct peek_client_hello_ctx * _ctx = (struct peek_client_hello_ctx *) promise_dettach_ctx(p);
+	struct peek_client_hello_ctx * _ctx = (struct peek_client_hello_ctx *)p;
 	return peek_client_hello_ctx_free(_ctx);
 }
 
@@ -576,7 +576,7 @@ static void ssl_async_peek_client_hello(struct future * future, evutil_socket_t
 	ctx->logger = logger;
 
 	event_add(ctx->ev, NULL);
-	promise_set_ctx(p, (void *) ctx, peek_client_hello_ctx_free);
+	promise_set_ctx(p, (void *) ctx, peek_client_hello_ctx_free_cb);
 	return;
 }
 
@@ -660,9 +660,9 @@ void ssl_connect_origin_ctx_free(struct ssl_connect_origin_ctx * ctx)
 	return;
 }
 
-void ssl_connect_origin_ctx_free(struct promise * p)
+void ssl_connect_origin_ctx_free(void *p)
 {
-	struct ssl_connect_origin_ctx * ctx = (struct ssl_connect_origin_ctx *) promise_dettach_ctx(p);
+	struct ssl_connect_origin_ctx * ctx = (struct ssl_connect_origin_ctx *)p;
 	ssl_connect_origin_ctx_free(ctx);
 }
 
@@ -1109,9 +1109,9 @@ void query_cert_ctx_free(struct ask_keyring_ctx * ctx)
 	return;
 }
 
-void query_cert_ctx_free(struct promise * p)
+void query_cert_ctx_free_cb(void * p)
 {
-	struct ask_keyring_ctx * ctx = (struct ask_keyring_ctx *) promise_dettach_ctx(p);
+	struct ask_keyring_ctx * ctx = (struct ask_keyring_ctx *)p;
 	query_cert_ctx_free(ctx);
 }
 
@@ -1185,7 +1185,7 @@ void ssl_async_downstream_create(struct future * f, struct ssl_mgr * mgr, struct
 	}
 
 	struct promise * p = future_to_promise(f);
-	promise_set_ctx(p, ctx, query_cert_ctx_free);
+	promise_set_ctx(p, ctx, query_cert_ctx_free_cb);
 	ctx->is_origin_crt_vaild = ssl_conn_verify_cert(mgr->trust_CA_store, upstream->ssl);
 	if(!ctx->is_origin_crt_vaild)
 	{