diff --git a/src/fr/inrialpes/exmo/align/impl/BasicOntologyNetwork.java b/src/fr/inrialpes/exmo/align/impl/BasicOntologyNetwork.java
index c15538b5b2080b4832475b7cd36db62a183c486b..041d1e37621d6cde02be7583ce8653897e0db514 100644
--- a/src/fr/inrialpes/exmo/align/impl/BasicOntologyNetwork.java
+++ b/src/fr/inrialpes/exmo/align/impl/BasicOntologyNetwork.java
@@ -341,18 +341,13 @@ public class BasicOntologyNetwork implements OntologyNetwork, Extensible {
 	    for ( OntologyTriple ot2 : ontologies.values() ) {
 		if ( ot1 != ot2 ) {
 		    // Now that it is normalised (but it is not)...
-System.err.println( " >> "+ot1+"("+ot1.onto.getURI()+") + "+ot2+"("+ot2.onto.getURI()+")" );
 		    Alignment al1 = onto2Align.get( ot1.onto.getURI() ).get( ot2.onto.getURI() ).iterator().next();
 		    for ( OntologyTriple ot3 : ontologies.values() ) {
 			if ( ( ot1 != ot3 ) && ( ot3 != ot2 ) ) {
-System.err.println( "   "+ot3+"("+ot3.onto.getURI()+")" );
 			    Alignment al2 = onto2Align.get( ot2.onto.getURI() ).get( ot3.onto.getURI() ).iterator().next();
-System.err.println( "   "+al2 );
 			    BasicAlignment al3 = (BasicAlignment)onto2Align.get( ot1.onto.getURI() ).get( ot3.onto.getURI() ).iterator().next();
-System.err.println( "   "+al3 );
 			    // Replaces al3 by al3 & ( al1 o al2 )
 			    Alignment result = al1.compose( al2 ); 
-System.err.println( "   = "+result );
 			    // result is a new alignment...
 			    // Check that result is entailed by al3 (semantic question)
 			    if ( !al3.contains( result ) ) {