diff --git a/src/site/markdown/design/design.md b/src/site/markdown/design/design-major-functions.md
similarity index 100%
rename from src/site/markdown/design/design.md
rename to src/site/markdown/design/design-major-functions.md
diff --git a/src/site/site.xml b/src/site/site.xml
index 8a15e49254d7cb1fbfbb77f0377c56e06cdb2717..4b9af80723657a8d02610519b7b32804c02e278d 100644
--- a/src/site/site.xml
+++ b/src/site/site.xml
@@ -38,10 +38,10 @@
       <item name="Contact"                  href="/contact.html"                            />
     </menu>
     <menu name="Design">
-      <item name="Overview"                 href="/design/overview.html"                    />
-      <item name="Technical choices"        href="/design/technical-choices.html"           />
-      <item name="Digital Elevation Model"  href="/design/digital-elevation-model.html"     />
-      <item name="Design"		            href="/design/design.html"                      />
+      <item name="Overview"                       href="/design/overview.html"                    />
+      <item name="Technical choices"              href="/design/technical-choices.html"           />
+      <item name="Digital Elevation Model"        href="/design/digital-elevation-model.html"     />
+      <item name="Design of the major functions"  href="/design/design-major-functions.html"                      />
     </menu>
     <menu name="Tutorials">
       <item name="Direct location"          href="/tutorials/direct-location.html"          />