diff --git a/dspace-api/src/main/java/org/dspace/disseminate/CitationDocumentServiceImpl.java b/dspace-api/src/main/java/org/dspace/disseminate/CitationDocumentServiceImpl.java
index c20961db75..b144186777 100644
--- a/dspace-api/src/main/java/org/dspace/disseminate/CitationDocumentServiceImpl.java
+++ b/dspace-api/src/main/java/org/dspace/disseminate/CitationDocumentServiceImpl.java
@@ -139,8 +139,8 @@ public class CitationDocumentServiceImpl implements CitationDocumentService, Ini
 
         //Load enabled collections
         String[] citationEnabledCollections = configurationService
-            .getArrayProperty("citation-page.enabled_collections");
-        citationEnabledCollectionsList = Arrays.asList(citationEnabledCollections);
+                .getArrayProperty("citation-page.enabled_collections");
+        citationEnabledCollectionsList = new ArrayList<String>(Arrays.asList(citationEnabledCollections));
 
         //Load enabled communities, and add to collection-list
         String[] citationEnabledCommunities = configurationService