diff --git a/tests/src/unit-comparison.cpp b/tests/src/unit-comparison.cpp
index 7f990d252..37b51ff03 100644
--- a/tests/src/unit-comparison.cpp
+++ b/tests/src/unit-comparison.cpp
@@ -356,6 +356,7 @@ TEST_CASE("lexicographical comparison operators")
                     CAPTURE(i)
                     CAPTURE(j)
                     CHECK((j_values[i] == j_values[j]) == expected_eq[i][j]);
+                    CHECK(expected_eq[i][j] == (j_values[i] == j_values[j]));
                 }
             }