diff --git a/CGAL_ImageIO/include/CGAL/Image_3.h b/CGAL_ImageIO/include/CGAL/Image_3.h
index e13a7e81e08..e344d0ccc19 100644
--- a/CGAL_ImageIO/include/CGAL/Image_3.h
+++ b/CGAL_ImageIO/include/CGAL/Image_3.h
@@ -503,7 +503,7 @@ Image_3::labellized_trilinear_interpolation
     static_cast<unsigned int>(lc));
 
   if(lc == 1) {
-    return labels[0];
+    return static_cast<Target_type>(labels[0]);
   }
     
   double best_value = 0.;
@@ -521,7 +521,7 @@ Image_3::labellized_trilinear_interpolation
     }
   }
 //   CGAL_assertion(best_value > 0.5);
-  return best;
+  return static_cast<Target_type>(best);
 }
 
 } // end namespace CGAL
diff --git a/Mesh_3/examples/Mesh_3/mesh_3D_gray_image_multiple_values.cpp b/Mesh_3/examples/Mesh_3/mesh_3D_gray_image_multiple_values.cpp
index 21fccb1a098..aff18d72b48 100644
--- a/Mesh_3/examples/Mesh_3/mesh_3D_gray_image_multiple_values.cpp
+++ b/Mesh_3/examples/Mesh_3/mesh_3D_gray_image_multiple_values.cpp
@@ -55,7 +55,7 @@ int main(int argc, char*argv[])
     iso_values.insert(2.9f);
   } else {
     for(int i = 2; i < argc; ++i) {
-      iso_values.insert(std::atof(argv[i]));
+      iso_values.insert(static_cast<float>(std::atof(argv[i])));
     }
   }