diff --git a/src/option.h b/src/option.h
index b1e6f82..1bd9d7d 100644
--- a/src/option.h
+++ b/src/option.h
@@ -910,6 +910,7 @@
     , BV_ET
     , BV_FENC
 #ifdef FEAT_EVAL
+    , BV_BEXPR
     , BV_FEX
 #endif
     , BV_FF