diff --git a/org.eclipse.rmf.reqif10.search.ui/src/org/eclipse/rmf/reqif10/search/filter/ui/FilterPanel.java b/org.eclipse.rmf.reqif10.search.ui/src/org/eclipse/rmf/reqif10/search/filter/ui/FilterPanel.java
index 8e9f653..9a5da1f 100644
--- a/org.eclipse.rmf.reqif10.search.ui/src/org/eclipse/rmf/reqif10/search/filter/ui/FilterPanel.java
+++ b/org.eclipse.rmf.reqif10.search.ui/src/org/eclipse/rmf/reqif10/search/filter/ui/FilterPanel.java
@@ -143,7 +143,7 @@
 		Map<String, AttributeDefinition> attributes = new HashMap<String, AttributeDefinition>();
 		for (SpecType specType : reqif.getCoreContent().getSpecTypes()) {
 			for (AttributeDefinition ad : specType.getSpecAttributes()) {
-				attributes.put(specType.getLongName() + "." + ad.getLongName(), ad);
+				attributes.put(specType.getLongName() + "." + ad.getLongName() + "." + ad.getIdentifier(), ad);
 			}
 		}