diff --git a/services/src/main/java/org/jd/gui/service/indexer/JavaModuleFileIndexerProvider.java b/services/src/main/java/org/jd/gui/service/indexer/JavaModuleFileIndexerProvider.java
index 41084238..e419b34b 100644
--- a/services/src/main/java/org/jd/gui/service/indexer/JavaModuleFileIndexerProvider.java
+++ b/services/src/main/java/org/jd/gui/service/indexer/JavaModuleFileIndexerProvider.java
@@ -32,6 +32,7 @@ public void index(API api, Container.Entry entry, Indexes indexes) {
         }
     }
 
+    @SuppressWarnings("unchecked")
     protected static void index(API api, Container.Entry entry, Indexes indexes, Map<String, Collection> packageDeclarationIndex) {
         for (Container.Entry e : entry.getChildren()) {
             if (e.isDirectory()) {