diff --git a/include/common/bspfile.hh b/include/common/bspfile.hh
index ef95d04f..d8806ab6 100644
--- a/include/common/bspfile.hh
+++ b/include/common/bspfile.hh
@@ -596,6 +596,7 @@ struct contentflags_t
     int32_t extended;
 
     // for CFLAGS_STRUCTURAL_COVERED_BY_DETAIL
+    // fixme-brushbsp: remove this
     int32_t covered_native;
 
     constexpr bool operator==(const contentflags_t &other) const