diff --git a/gpl-lgpl.tex b/gpl-lgpl.tex
index 720e1c903c2b38f7c5d4c97587b59c60fdbd8a58..041ce940b9c0bb81dc7eb9910054feddee176f8f 100644
--- a/gpl-lgpl.tex
+++ b/gpl-lgpl.tex
@@ -1113,6 +1113,7 @@ on making a profit from Free Software redistribution.)
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 \chapter{Derivative Works: Statute and Case Law}
+\label{derivative-works}
 
 We digress for this chapter from our discussion of GPL's exact text to
 consider the matter of derivative works --- a concept that we must