diff --git a/test/algorithms/test_equals.hpp b/test/algorithms/test_equals.hpp
index eae1caaf5..485dc700c 100644
--- a/test/algorithms/test_equals.hpp
+++ b/test/algorithms/test_equals.hpp
@@ -31,6 +31,15 @@ void check_geometry(Geometry1 const& geometry1,
 {
     bool detected = bg::equals(geometry1, geometry2);
 
+    BOOST_CHECK_MESSAGE(detected == expected,
+        "case: " << caseid
+        << " equals: " << wkt1
+        << " to " << wkt2
+        << " -> Expected: " << expected
+        << " detected: " << detected);
+
+    detected = bg::equals(geometry2, geometry1);
+
     BOOST_CHECK_MESSAGE(detected == expected,
         "case: " << caseid
         << " equals: " << wkt1