diff --git a/source/basic.tex b/source/basic.tex
index 62ae3796ac..8a0d1d9527 100644
--- a/source/basic.tex
+++ b/source/basic.tex
@@ -6269,7 +6269,7 @@
 \pnum
 The value of an
 atomic object $M$, as determined by evaluation $B$, shall be the value
-stored by some
+stored by some unspecified
 side effect $A$ that modifies $M$, where $B$ does not happen
 before $A$.
 \begin{note}