Replaced a missing "not".

diff --git a/doc/project_overview/index.xhtml b/doc/project_overview/index.xhtml
index 8591cb4417bc8cd991d61440f15d2c30a779260b..d1544b603165acd09b99a1566422204e3c565af7 100644 (file)
--- a/doc/project_overview/index.xhtml
+++ b/doc/project_overview/index.xhtml
@@ -214,8 +214,8 @@
   <p>
     <em>
       Note: the <a href="../../makefile">makefile</a> provides a task
-      for creation/import of the databases, but its use is strictly
-      required.
+      for creation/import of the databases, but its use is not
+      strictly required.
     </em>
   </p>