diff --git a/src/helma/objectmodel/db/Relation.java b/src/helma/objectmodel/db/Relation.java
index 74aaed4c..5e1a955a 100644
--- a/src/helma/objectmodel/db/Relation.java
+++ b/src/helma/objectmodel/db/Relation.java
@@ -857,7 +857,7 @@ public final class Relation {
                         if (propertyName != null) {
                             IProperty property = nonvirtual.get(propertyName);
                             if (property != null) {
-                                value = property.getValue();
+                                value = property.getStringValue();
                             }
                         }
                         if (value == null) {