diff --git a/nixos/doc/manual/default.nix b/nixos/doc/manual/default.nix
index faae4f20544..02b91773f5d 100644
--- a/nixos/doc/manual/default.nix
+++ b/nixos/doc/manual/default.nix
@@ -265,6 +265,7 @@ in rec {
       xsltproc \
         ${manualXsltprocOptions} \
         --stringparam target.database.document "${olinkDB}/olinkdb.xml" \
+        --stringparam id.warnings "1" \
         --nonet --output $dst/ \
         ${docbook_xsl_ns}/xml/xsl/docbook/xhtml/chunktoc.xsl \
         ${manual-combined}/manual-combined.xml