diff --git a/src/option.h b/src/option.h
index cfa7692..b635db1 100644
--- a/src/option.h
+++ b/src/option.h
@@ -1039,6 +1039,7 @@
     , WV_LBR
 #endif
     , WV_NU
+    , WV_RNU
 #ifdef FEAT_LINEBREAK
     , WV_NUW
 #endif