diff --git a/tests/utility/smartPtrTest.cpp b/tests/utility/smartPtrTest.cpp
index 35824f42..f741f12b 100644
--- a/tests/utility/smartPtrTest.cpp
+++ b/tests/utility/smartPtrTest.cpp
@@ -35,6 +35,7 @@ VMIME_TEST_SUITE_BEGIN
 		VMIME_TEST(testCast)
 		VMIME_TEST(testContainer)
 		VMIME_TEST(testCompare)
+		VMIME_TEST(testThisRefCtor)
 	VMIME_TEST_LIST_END
 
 
@@ -60,6 +61,12 @@ VMIME_TEST_SUITE_BEGIN
 		bool* m_aliveFlag;
 	};
 
+	struct X : public vmime::object
+	{
+		X() { f(thisRef().dynamicCast <X>()); }
+		static void f(vmime::ref <X> /* x */) { }
+	};
+
 
 	void testNull()
 	{
@@ -237,5 +244,11 @@ VMIME_TEST_SUITE_BEGIN
 		VASSERT("10", std::find(v.begin(), v.end(), r3) == v.end());
 	}
 
+	void testThisRefCtor()
+	{
+		// BUGFIX: thisRef() MUST NOT be called from the object constructor
+		VASSERT_THROW("1", vmime::create <X>(), std::runtime_error);
+	}
+
 VMIME_TEST_SUITE_END