diff --git a/Manuals/Tcar-ug/Licenses/gfdl.docbook b/Manuals/Tcar-ug/Licenses/gfdl.docbook
index 57d1e0a..33f6e8c 100644
--- a/Manuals/Tcar-ug/Licenses/gfdl.docbook
+++ b/Manuals/Tcar-ug/Licenses/gfdl.docbook
@@ -1,4 +1,4 @@
-<appendix id="licenses-gfdl" xreflabel="GNU Free Documentation License">
+<appendix id="licenses-gfdl">
 
     <title>GNU Free Documentation License</title>