diff --git a/Doc/lib/libsgmllib.tex b/Doc/lib/libsgmllib.tex
index 44ed3ca..5269f20 100644
--- a/Doc/lib/libsgmllib.tex
+++ b/Doc/lib/libsgmllib.tex
@@ -8,7 +8,7 @@
 Mark-up Language).  In fact, it does not provide a full SGML parser
 --- it only parses SGML insofar as it is used by HTML, and the module
 only exists as a base for the \code{htmllib} module.
-\stmodindex{htmllib}
+\refstmodindex{htmllib}
 
 In particular, the parser is hardcoded to recognize the following
 constructs:
diff --git a/Doc/libsgmllib.tex b/Doc/libsgmllib.tex
index 44ed3ca..5269f20 100644
--- a/Doc/libsgmllib.tex
+++ b/Doc/libsgmllib.tex
@@ -8,7 +8,7 @@
 Mark-up Language).  In fact, it does not provide a full SGML parser
 --- it only parses SGML insofar as it is used by HTML, and the module
 only exists as a base for the \code{htmllib} module.
-\stmodindex{htmllib}
+\refstmodindex{htmllib}
 
 In particular, the parser is hardcoded to recognize the following
 constructs: