diff --git a/doc/functions.xml b/doc/functions.xml
index e767d01d8431..e3a6975f91f8 100644
--- a/doc/functions.xml
+++ b/doc/functions.xml
@@ -57,7 +57,7 @@ in ...</programlisting>
     linkend="sec-modify-via-packageOverrides">config.packageOverrides</link>,
     along with that from previous calls if this function was called repeatedly.
     Now those previous changes will be preserved so this function can be "chained" meaningfully.
-    To recover the old behavior, make sure <varname>config.packageOverrides<varname> is unset,
+    To recover the old behavior, make sure <varname>config.packageOverrides</varname> is unset,
     and call this only once off a "freshly" imported nixpkgs:
 
     <programlisting>let