1 files changed, 2 insertions, 2 deletions

diff --git a/src/uk/ac/ox/cs/pagoda/rules/Program.java b/src/uk/ac/ox/cs/pagoda/rules/Program.java
index b533e50..83cd21a 100644
--- a/src/uk/ac/ox/cs/pagoda/rules/Program.java
+++ b/src/uk/ac/ox/cs/pagoda/rules/Program.java
@@ -138,7 +138,7 @@ public abstract class Program implements KnowledgeBase {
                 transitiveAxioms = new LinkedList<OWLTransitiveObjectPropertyAxiom>();
                 subPropChainAxioms = new LinkedList<OWLSubPropertyChainOfAxiom>();
                 
-                OWLEntity date = ontology.getOWLOntologyManager().getOWLDataFactory().getOWLDatatype(IRI.create("http://www.w3.org/2001/XMLSchema#date")); 
+                OWLDatatype date = ontology.getOWLOntologyManager().getOWLDataFactory().getOWLDatatype(IRI.create("http://www.w3.org/2001/XMLSchema#date")); 
                 int noOfDataPropertyRangeAxioms = 0, noOfAxioms = 0; 
                 for (OWLOntology onto: ontology.getImportsClosure())
                         for (OWLAxiom axiom: onto.getAxioms()) {
@@ -152,7 +152,7 @@ public abstract class Program implements KnowledgeBase {
                                         Utility.logInfo("The axiom: " + axiom + " is being ignored.");
                                 }
                                 else {
-                                        if (axiom.containsEntityInSignature(date)) {
+                                        if (axiom.getDatatypesInSignature().contains(date)) {
                                                 Utility.logInfo("The axiom: " + axiom + " is being ignored.");
                                         }
                                         else manager.addAxiom(filteredOntology, axiom);