diff --git a/elk-reasoner/src/test/java/org/semanticweb/elk/reasoner/incremental/TestChangesLoader.java b/elk-reasoner/src/test/java/org/semanticweb/elk/reasoner/incremental/TestChangesLoader.java
index <HASH>..<HASH> 100644
--- a/elk-reasoner/src/test/java/org/semanticweb/elk/reasoner/incremental/TestChangesLoader.java
+++ b/elk-reasoner/src/test/java/org/semanticweb/elk/reasoner/incremental/TestChangesLoader.java
@@ -54,7 +54,7 @@ public class TestChangesLoader implements ChangesLoader, OntologyLoader {
 
 	public TestChangesLoader add(final ElkAxiom axiom) {
 		if (listener_ != null) {
-			listener_.notify(new SimpleElkAxiomChange(axiom, -1));
+			listener_.notify(new SimpleElkAxiomChange(axiom, 1));
 		}
 		axioms_.add(axiom);
 		changes_.add(true);
fixing the multiplicity in the notification (currently not used)