diff --git a/bundlerepository/src/main/java/org/apache/felix/bundlerepository/ResourceImpl.java b/bundlerepository/src/main/java/org/apache/felix/bundlerepository/ResourceImpl.java
index e32bb5b..fb57b28 100644
--- a/bundlerepository/src/main/java/org/apache/felix/bundlerepository/ResourceImpl.java
+++ b/bundlerepository/src/main/java/org/apache/felix/bundlerepository/ResourceImpl.java
@@ -35,10 +35,10 @@
     private List m_capList = new ArrayList();
     private List m_reqList = new ArrayList();
 
-    private String m_resourceURI = "";
-    private String m_docURI = "";
-    private String m_licenseURI = "";
-    private String m_sourceURI = "";
+    private String m_resourceURI = null;
+    private String m_docURI = null;
+    private String m_licenseURI = null;
+    private String m_sourceURI = null;
     private boolean m_converted = false;
 
     public ResourceImpl()