diff --git a/Doc/lib/liboperator.tex b/Doc/lib/liboperator.tex
index 238a060..4e2e845 100644
--- a/Doc/lib/liboperator.tex
+++ b/Doc/lib/liboperator.tex
@@ -1,7 +1,7 @@
 % Contributed by Skip Montanaro, from the module's doc strings.
 
 \section{Built-in Module \sectcode{operator}}	% If implemented in C
-\bimodindex{spam}
+\bimodindex{operator}
 
 The \code{operator} module exports a set of functions implemented in C
 corresponding to the intrinsic operators of Python.  For example,