diff --git a/drmmode.h b/drmmode.h
index 3088b7a..1110ce8 100644
--- a/drmmode.h
+++ b/drmmode.h
@@ -71,6 +71,7 @@
   uint32_t v_sync_end_;
   uint32_t v_total_;
   uint32_t v_scan_;
+  uint32_t v_refresh_;
 
   uint32_t flags_;
   uint32_t type_;