diff --git a/src/fr/inrialpes/exmo/align/impl/MatrixMeasure.java b/src/fr/inrialpes/exmo/align/impl/MatrixMeasure.java
index f032846a3ea488442c17d38b65be1353a70a3e09..114a78d94354a192306cb5f5a75f2fa8921d79c5 100644
--- a/src/fr/inrialpes/exmo/align/impl/MatrixMeasure.java
+++ b/src/fr/inrialpes/exmo/align/impl/MatrixMeasure.java
@@ -163,6 +163,7 @@ public abstract class MatrixMeasure implements Similarity {
 	} catch (OntowrapException e) { e.printStackTrace(); };
     }
 
+    @SuppressWarnings("unchecked") //ConcatenatedIterator
     public void compute( Properties params ){
 	try {
 	    // Compute distances on classes