diff --git a/docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java b/docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java
index 24fd97bb..02195329 100644
--- a/docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java
+++ b/docs-web/src/main/java/com/sismics/docs/rest/resource/FileResource.java
@@ -290,7 +290,7 @@ public class FileResource extends BaseResource {
         DocumentDao documentDao = new DocumentDao();
         FileDao fileDao = new FileDao();
         File file = fileDao.getFile(id);
-        if (file == null) {
+        if (file == null || file.getDocumentId() == null) {
             throw new NotFoundException();
         }
         DocumentDto documentDto = documentDao.getDocument(file.getDocumentId(), PermType.WRITE, getTargetIdList(null));
diff --git a/docs-web/src/main/webapp/src/style/main.less b/docs-web/src/main/webapp/src/style/main.less
index 4998f80a..a9c13ce5 100644
--- a/docs-web/src/main/webapp/src/style/main.less
+++ b/docs-web/src/main/webapp/src/style/main.less
@@ -653,6 +653,10 @@ input[readonly].share-link {
   }
 }
 
+.navbar-brand {
+  font-weight: 500;
+}
+
 .nav > li {
   font-weight: 500;
 }