diff --git a/source/basic.tex b/source/basic.tex
index 96e289ef2f..fecaa1e78a 100644
--- a/source/basic.tex
+++ b/source/basic.tex
@@ -7767,7 +7767,7 @@
 handlers\iref{support.runtime} that does not happen before\iref{intro.multithread}
 completion of destruction of objects with static storage duration and execution of
 \tcode{std::atexit} registered functions\iref{support.start.term}, the program has
-undefined behavior
+undefined behavior.
 \begin{note}
 If there is a use of an object with static storage
 duration that does not happen before the object's destruction, the program has undefined