diff --git a/source/utilities.tex b/source/utilities.tex
index 97e4e2bf26..a675194b9b 100644
--- a/source/utilities.tex
+++ b/source/utilities.tex
@@ -15565,7 +15565,6 @@
 \indexlibraryglobal{wformat_context}%
 \indexlibraryglobal{format_args}%
 \indexlibraryglobal{wformat_args}%
-\indexlibraryglobal{format_args_t}%
 \indexlibraryglobal{format_to_n_result}%
 \indexlibrarymember{out}{format_to_n_result}%
 \indexlibrarymember{size}{format_to_n_result}%