diff --git a/source/support.tex b/source/support.tex
index 9abc991973..30dd35855a 100644
--- a/source/support.tex
+++ b/source/support.tex
@@ -4770,6 +4770,7 @@
 \indexlibraryglobal{is_geq}%
 \indexlibraryglobal{is_gteq}%
 \indexlibraryglobal{common_comparison_category_t}%
+\indexlibraryglobal{compare_three_way_result_t}%
 \indexlibraryglobal{type_order_v}%
 \begin{codeblock}
 // all freestanding
@@ -5440,6 +5441,7 @@
 that adds specializations for the \tcode{compare_three_way_result} template
 defined in this subclause is undefined.
 
+\indexlibraryglobal{compare_three_way_result}%
 \pnum
 For the \tcode{compare_three_way_result} type trait
 applied to the types \tcode{T} and \tcode{U},