diff --git a/source/atomics.tex b/source/atomics.tex
index 9ad8f7e20b..45752b2680 100644
--- a/source/atomics.tex
+++ b/source/atomics.tex
@@ -1907,7 +1907,7 @@
 if (memcmp(this, &expected, sizeof(*this)) == 0)
   memcpy(this, &desired, sizeof(*this));
 else
-  memcpy(expected, this, sizeof(*this));
+  memcpy(&expected, this, sizeof(*this));
 \end{codeblock}
 \end{note}
 \begin{example}