diff --git a/content-xml/src/main/java/org/xbib/content/xml/json/JsonSaxAdapter.java b/content-xml/src/main/java/org/xbib/content/xml/json/JsonSaxAdapter.java
index 553e183..b2e3496 100644
--- a/content-xml/src/main/java/org/xbib/content/xml/json/JsonSaxAdapter.java
+++ b/content-xml/src/main/java/org/xbib/content/xml/json/JsonSaxAdapter.java
@@ -177,7 +177,7 @@ public class JsonSaxAdapter {
 
         @Override
         public String getPublicId() {
-            Object sourceRef = jsonParser.getCurrentLocation().getSourceRef();
+            Object sourceRef = jsonParser.getCurrentLocation().contentReference().getRawContent();
             if (sourceRef != null) {
                 return sourceRef.toString();
             } else {