diff --git a/src/main/java/com/googlesource/gerrit/plugins/menuextender/GetMenus.java b/src/main/java/com/googlesource/gerrit/plugins/menuextender/GetMenus.java
index 83badb8..6aa29a0 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/menuextender/GetMenus.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/menuextender/GetMenus.java
@@ -52,7 +52,7 @@
 
   @Inject
   public GetMenus(@PluginName String pluginName, SitePaths sitePaths) {
-    this.cfgFile = new File(sitePaths.etc_dir, pluginName + ".config");
+    this.cfgFile = sitePaths.etc_dir.resolve(pluginName + ".config").toFile();
   }
 
   @Override
diff --git a/src/main/java/com/googlesource/gerrit/plugins/menuextender/PutMenus.java b/src/main/java/com/googlesource/gerrit/plugins/menuextender/PutMenus.java
index fa58db8..0f5629b 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/menuextender/PutMenus.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/menuextender/PutMenus.java
@@ -63,7 +63,8 @@
       throws IOException, ConfigInvalidException {
     FileBasedConfig cfg =
         new FileBasedConfig(
-            new File(sitePaths.etc_dir, pluginName + ".config"), FS.DETECTED);
+            sitePaths.etc_dir.resolve(pluginName + ".config").toFile(),
+            FS.DETECTED);
     cfg.load();
     cfg.clear();
     if (input.menus != null) {