diff --git a/src/backend/x11/event.c b/src/backend/x11/event.c
index ddc2dd2..1d008ed 100644
--- a/src/backend/x11/event.c
+++ b/src/backend/x11/event.c
@@ -68,7 +68,7 @@ static bool handle_map_request(backend_t *backend, event_t *event,
   p_clear(event, 1);
   event->type = ZDWM_EVENT_WINDOW_MAP_REQUEST;
 
-  window_map_request_event_t *ev = &event->data.window_map_request;
+  window_map_request_event_t *ev = &event->as.window_map_request;
   ev->window = (window_id_t)window;
   ev->transient_for = window_get_transient_for(backend, window);
   ev->geometry_mode = ZDWM_GEOMETRY_NORMAL;
diff --git a/src/core/event.h b/src/core/event.h
index ae486f5..38a7a9f 100644
--- a/src/core/event.h
+++ b/src/core/event.h
@@ -176,5 +176,5 @@ typedef struct event_t {
     window_activate_request_event_t window_activate_request;
     window_state_request_event_t window_state_request;
     configure_request_event_t configure_request;
-  } data;
+  } as;
 } event_t;