diff --git a/texmf/ls-R b/texmf/ls-R
index c6f652b..c131b80 100644
--- a/texmf/ls-R
+++ b/texmf/ls-R
@@ -33,6 +33,7 @@ dvipdfmx.cfg
 ./fmtutil.d:
 ._cfg0000_format.texlive-basic.cnf
 ._cfg0000_format.texlive-latex.cnf
+._cfg0000_format.texlive-mathextra.cnf
 format.texlive-basic.cnf
 format.texlive-formatsextra.cnf
 format.texlive-latex.cnf