diff --git a/CGAL_ImageIO/include/CGAL/read_sep_image_data.h b/CGAL_ImageIO/include/CGAL/read_sep_image_data.h
index bfe33c5451d..ea84da1fc4a 100644
--- a/CGAL_ImageIO/include/CGAL/read_sep_image_data.h
+++ b/CGAL_ImageIO/include/CGAL/read_sep_image_data.h
@@ -300,8 +300,6 @@ public:
 
     const double v11 = raw_value(i1, j1);
     const double v12 = raw_value(i1, j2);
-    const double v22 = raw_value(i2, j2);
-    const double v21 = raw_value(i2, j1);
 
     return 
       (v11 * di2 + v12 * di1) * dj2 +