diff --git a/src/fr/inrialpes/exmo/align/impl/rel/EquivRelation.java b/src/fr/inrialpes/exmo/align/impl/rel/EquivRelation.java
index 81316312bfc0006400c42ea0005d1e4635de8276..1c9cf6dd4f6def1166df3417024c5a2879307e52 100644
--- a/src/fr/inrialpes/exmo/align/impl/rel/EquivRelation.java
+++ b/src/fr/inrialpes/exmo/align/impl/rel/EquivRelation.java
@@ -1,7 +1,7 @@
 /*
  * $Id$
  *
- * Copyright (C) INRIA, 2004, 2008, 2011
+ * Copyright (C) INRIA, 2004, 2008, 2011-2012
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published by
@@ -36,7 +36,7 @@ import fr.inrialpes.exmo.align.impl.BasicRelation;
 public class EquivRelation extends BasicRelation {
 
     public void accept( AlignmentVisitor visitor ) throws AlignmentException {
-	visitor.visit( (EquivRelation)this );
+	visitor.visit( this );
     }
 
     static final String prettyLabel = "=";
diff --git a/src/fr/inrialpes/exmo/align/impl/renderer/RDFRendererVisitor.java b/src/fr/inrialpes/exmo/align/impl/renderer/RDFRendererVisitor.java
index 0a3b9198f9e46ac22fd718a4659de60804b8b403..0ae6f2d174e82a1895703cafdb54ee5e5575e9d9 100644
--- a/src/fr/inrialpes/exmo/align/impl/renderer/RDFRendererVisitor.java
+++ b/src/fr/inrialpes/exmo/align/impl/renderer/RDFRendererVisitor.java
@@ -727,13 +727,13 @@ public class RDFRendererVisitor extends IndentedRendererVisitor implements Align
 	increaseIndent();
 	indentedOutputln("<"+SyntaxElement.TRENT1.print(DEF)+">");
 	increaseIndent();
-	((ValueExpression)(transf.getObject1())).accept( this );
+	transf.getObject1().accept( this );
 	decreaseIndent();
 	writer.print(NL);
 	indentedOutputln("</"+SyntaxElement.TRENT1.print(DEF)+">");
 	indentedOutputln("<"+SyntaxElement.TRENT2.print(DEF)+">");
 	increaseIndent();
-	((ValueExpression)(transf.getObject2())).accept( this );
+	transf.getObject2().accept( this );
 	decreaseIndent();
 	writer.print(NL);
 	indentedOutputln("</"+SyntaxElement.TRENT2.print(DEF)+">");