diff --git a/tests/src/unit-constructor1.cpp b/tests/src/unit-constructor1.cpp
index f294e5cd64..26653f261f 100644
--- a/tests/src/unit-constructor1.cpp
+++ b/tests/src/unit-constructor1.cpp
@@ -458,6 +458,15 @@ TEST_CASE("constructors")
         {
             std::vector<bool> v{true};
             json j(v[0]);
+            CHECK(std::is_same<decltype(v[0]), std::vector<bool>::reference>::value);
+            CHECK(j.type() == json::value_t::boolean);
+        }
+
+        SECTION("from std::vector<bool>::const_refrence")
+        {
+            const std::vector<bool> v{true};
+            json j(v[0]);
+            CHECK(std::is_same<decltype(v[0]), std::vector<bool>::const_reference>::value);
             CHECK(j.type() == json::value_t::boolean);
         }
     }