diff --git a/common/include/tfe_future.h b/common/include/tfe_future.h
index ac1df0e..b8d2aac 100644
--- a/common/include/tfe_future.h
+++ b/common/include/tfe_future.h
@@ -13,7 +13,7 @@ struct future;
 typedef void future_result_t;
 typedef void (future_success_cb)(future_result_t* result, void * user);
 typedef void (future_failed_cb)(enum e_future_error err, const char * what, void * user);
-typedef void (promise_ctx_destroy_cb)(struct promise * p);
+typedef void (promise_ctx_destroy_cb)(void* ctx);
 
 void future_promise_library_init(void);