diff --git a/src/Commands/core/MkCommands.php b/src/Commands/core/MkCommands.php
index a889beead7..1c6e3693ea 100644
--- a/src/Commands/core/MkCommands.php
+++ b/src/Commands/core/MkCommands.php
@@ -232,7 +232,7 @@ protected function writeYml(array $nav_commands, array $nav_generators, array $m
         $base = Yaml::parseFile(Path::join($dest, 'mkdocs_base.yml'));
         $base['nav'][] = ['Commands' => $nav_commands];
         $base['nav'][] = ['Generators' => $nav_generators];
-        $base['nav'][] = ['API' => 'api'];
+        $base['nav'][] = ['API' => '/api'];
         $base['plugins'][]['redirects']['redirect_maps'] = $map_commands + $map_generators;
         $yaml_nav = Yaml::dump($base, PHP_INT_MAX, 2);