diff --git a/buildflags.md b/buildflags.md
index 483c81b..6a62b69 100644
--- a/buildflags.md
+++ b/buildflags.md
@@ -313,8 +313,9 @@ command line.  It adds the following flag to the command line:
 To support [binary watermarks for ELF
 objects](https://fedoraproject.org/wiki/Toolchain/Watermark) using
 annobin, the `-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1` flag is
-added by default.  This can be switched off by undefining the
-`%_annotated_build` RPM macro (see above).
+added by default (with the `gcc` toolchain).  This can be switched off
+by undefining the `%_annotated_build` RPM macro (see above).  Binary
+watermarks are currently disabled with the `clang` toolchain.
 
 ### Architecture-specific compiler flags