diff --git a/CppUnit/include/CppUnit/TestDecorator.h b/CppUnit/include/CppUnit/TestDecorator.h
index 31d6a134f..85b5f3de9 100644
--- a/CppUnit/include/CppUnit/TestDecorator.h
+++ b/CppUnit/include/CppUnit/TestDecorator.h
@@ -33,11 +33,11 @@ public:
 
 	virtual ~TestDecorator();
 
-	int countTestCases();
+	int countTestCases() const;
 
 	void run(TestResult* result);
 
-	std::string toString();
+	std::string toString() const;
 
 protected:
 	Test* _test;
diff --git a/CppUnit/src/TestDecorator.cpp b/CppUnit/src/TestDecorator.cpp
index 89eb08218..634af35b6 100644
--- a/CppUnit/src/TestDecorator.cpp
+++ b/CppUnit/src/TestDecorator.cpp
@@ -20,7 +20,7 @@ TestDecorator::~TestDecorator()
 }
 
 
-int TestDecorator::countTestCases()
+int TestDecorator::countTestCases() const
 {
 	return _test->countTestCases();
 }
@@ -29,10 +29,10 @@ int TestDecorator::countTestCases()
 void TestDecorator::run(TestResult* result)
 {
 	_test->run(result);
-} 
+}
 
 
-std::string TestDecorator::toString()
+std::string TestDecorator::toString() const
 {
 	return _test->toString();
 }