diff --git a/tests/CSharpTemp/CSharpTemp.cpp b/tests/CSharpTemp/CSharpTemp.cpp
index 4afe726e..58670fe6 100644
--- a/tests/CSharpTemp/CSharpTemp.cpp
+++ b/tests/CSharpTemp/CSharpTemp.cpp
@@ -343,6 +343,10 @@ void MethodsWithDefaultValues::defaultRefTypeEnumImplicitCtor(const QColor &fill
 {
 }
 
+void MethodsWithDefaultValues::rotate4x4Matrix(float angle, float x, float y, float z)
+{
+}
+
 void HasPrivateOverrideBase::privateOverride(int i)
 {
 }
diff --git a/tests/CSharpTemp/CSharpTemp.h b/tests/CSharpTemp/CSharpTemp.h
index cc5bd8b5..0324aa47 100644
--- a/tests/CSharpTemp/CSharpTemp.h
+++ b/tests/CSharpTemp/CSharpTemp.h
@@ -269,6 +269,7 @@ public:
     void defaultImplicitCtorFoo(Quux arg = Foo());
     void defaultIntWithLongExpression(unsigned int i = DEFAULT_INT);
     void defaultRefTypeEnumImplicitCtor(const QColor &fillColor = Qt::white);
+    void rotate4x4Matrix(float angle, float x, float y, float z = 0.0f);
 };
 
 class DLL_API HasPrivateOverrideBase