diff --git a/test/algorithms/covered_by/covered_by.cpp b/test/algorithms/covered_by/covered_by.cpp
index e6bf0fa3e..e81c3c40c 100644
--- a/test/algorithms/covered_by/covered_by.cpp
+++ b/test/algorithms/covered_by/covered_by.cpp
@@ -155,6 +155,12 @@ void test_mixed_of()
     BOOST_CHECK_EQUAL(bg::covered_by(p1, box2), true);
     BOOST_CHECK_EQUAL(bg::covered_by(box1, box2), true);
     BOOST_CHECK_EQUAL(bg::covered_by(box2, box1), false);
+
+    // TODO: the following does not compile due to incompatible coordinate types
+    // (probably needed by overlay)
+    //BOOST_CHECK_EQUAL(bg::covered_by(poly1, poly2), true);
+    //BOOST_CHECK_EQUAL(bg::covered_by(box1, poly1), true);
+    //BOOST_CHECK_EQUAL(bg::covered_by(box2, poly1), true);
 }