diff --git a/source/lex.tex b/source/lex.tex
index 8005b33374..edabe389f3 100644
--- a/source/lex.tex
+++ b/source/lex.tex
@@ -1851,7 +1851,6 @@
 
 \pnum
 \indextext{literal!string}%
-\indextext{character string}%
 \indextext{string!type of}%
 \indextext{type!\idxcode{wchar_t}}%
 \indextext{prefix!\idxcode{L}}%