diff --git a/doc/src/sgml/sources.sgml b/doc/src/sgml/sources.sgml
index 0db36aee2f5..514090d5a64 100644
--- a/doc/src/sgml/sources.sgml
+++ b/doc/src/sgml/sources.sgml
@@ -470,7 +470,7 @@ IpcMemoryCreate: shmget(key=%d, size=%u, 0%o) failed: %m
 <programlisting>
 Primary:    could not create shared memory segment: %m
 Detail:     Failed syscall was shmget(key=%d, size=%u, 0%o).
-Hint:       the addendum
+Hint:       The addendum, written as a complete sentence.
 </programlisting>
    </para>