diff --git a/documentation/RELEASE_NOTES.html b/documentation/RELEASE_NOTES.html
index 461cc0f7d0a090e936089c80d32bc59cfecc6b43..3c5ba683681229068607f1ceaa01f3741663d4e1 100644
--- a/documentation/RELEASE_NOTES.html
+++ b/documentation/RELEASE_NOTES.html
@@ -18,7 +18,7 @@
 <p>The dependency output for .db and .acf files created by makeDbDepends.pl did
 not show the directories of the depended files. The makeDbDepends.pl script has
 been replaced by mkmf.pl for this purpose after modifying it to accept multiple
--I include directory options and more than on source file on the command line.
+-I include directory options and more than one source file on the command line.
 The makeDbDepends.pl script has been removed from Base.</p>
 
 <h4>Native linux-arm builds added</h4>