diff --git a/src/org/semanticweb/owl/align/Alignment.java b/src/org/semanticweb/owl/align/Alignment.java
index b8bf295952b4ff7d1034e1e66e8cf1140277329a..c87a5d4cc9282b6f4ecf9be3749e24cd64e64d2e 100644
--- a/src/org/semanticweb/owl/align/Alignment.java
+++ b/src/org/semanticweb/owl/align/Alignment.java
@@ -109,6 +109,7 @@ public interface Alignment extends Cloneable, Iterable<Cell> {
     public Cell addAlignCell( Object ob1, Object ob, String relation, double measure) throws AlignmentException;
     public Cell addAlignCell( Object ob1, Object ob2) throws AlignmentException;
 
+    public void remCell( Cell c ) throws AlignmentException;
     /**
      * Cells are retrieved
      * These primitives are deprecated. Use getAlignCells1 and getAlignCells2