diff --git a/src/Generator/Generators/CSharp/CSharpSources.cs b/src/Generator/Generators/CSharp/CSharpSources.cs
index f4246f89a9..df09a91a8c 100644
--- a/src/Generator/Generators/CSharp/CSharpSources.cs
+++ b/src/Generator/Generators/CSharp/CSharpSources.cs
@@ -2901,7 +2901,6 @@ public void GenerateFunctionCall(string functionName, List<Parameter> parameters
                     ArgName = Helpers.ReturnIdentifier,
                     ReturnVarName = Helpers.ReturnIdentifier,
                     ReturnType = returnType,
-                    Parameter = operatorParam,
                     Function = function
                 };
 
diff --git a/tests/CSharp/CSharp.Tests.cs b/tests/CSharp/CSharp.Tests.cs
index 0e7fc348e1..b2522aa36d 100644
--- a/tests/CSharp/CSharp.Tests.cs
+++ b/tests/CSharp/CSharp.Tests.cs
@@ -248,7 +248,7 @@ public void TestDefaultArguments()
             methodsWithDefaultValues.DefaultEmptyEnum();
             methodsWithDefaultValues.DefaultRefTypeBeforeOthers();
             methodsWithDefaultValues.DefaultRefTypeAfterOthers();
-            methodsWithDefaultValues.DefaultRefTypeBeforeAndAfterOthers(0, null);
+            methodsWithDefaultValues.DefaultRefTypeBeforeAndAfterOthers();
             methodsWithDefaultValues.DefaultIntAssignedAnEnum();
             methodsWithDefaultValues.defaultRefAssignedValue();
             methodsWithDefaultValues.DefaultRefAssignedValue();
@@ -1276,7 +1276,17 @@ public void TestConstCharStarRef()
     }
 
     [Test]
-    public void Test()
+    public void TestImplicitConversionToString()
+    {
+        using (Foo foo = new Foo("name"))
+        {
+            string name = foo;
+            Assert.That(name, Is.EqualTo("name"));
+        }
+    }
+
+    [Test]
+    public void TestHasFunctionPointerField()
     {
         using (var hasFunctionPtrField = new HasFunctionPtrField())
         {
diff --git a/tests/CSharp/CSharp.cpp b/tests/CSharp/CSharp.cpp
index d5a4fcb661..663a7a7de9 100644
--- a/tests/CSharp/CSharp.cpp
+++ b/tests/CSharp/CSharp.cpp
@@ -8,10 +8,20 @@ Foo::Foo(const QString& name)
 
 Foo::Foo(const char* name) : publicFieldMappedToEnum(TestFlag::Flag2)
 {
+    if (name)
+    {
+        _name = name;
+    }
     A = 10;
     P = 50;
 }
 
+Foo::Foo(const Foo& other) : A(other.A), P(other.P),
+    templateInAnotherUnit(other.templateInAnotherUnit),
+    _name(other._name)
+{
+}
+
 Foo::Foo(int a, int p) : publicFieldMappedToEnum(TestFlag::Flag2)
 {
     A = a;
@@ -26,6 +36,10 @@ Foo::Foo(wchar_t ch)
 {
 }
 
+Foo::~Foo()
+{
+}
+
 int Foo::method()
 {
     return 1;
@@ -104,6 +118,11 @@ int Foo::operator --()
     return 4;
 }
 
+Foo::operator const char*() const
+{
+    return _name.data();
+}
+
 const Foo& Bar::operator[](int i) const
 {
     return m_foo;
@@ -215,6 +234,10 @@ Bar::Bar(Items item)
 {
 }
 
+Bar::~Bar()
+{
+}
+
 int Bar::method()
 {
     return 2;
@@ -263,10 +286,18 @@ ForceCreationOfInterface::ForceCreationOfInterface()
 {
 }
 
+ForceCreationOfInterface::~ForceCreationOfInterface()
+{
+}
+
 Baz::Baz(Bar::Items item)
 {
 }
 
+Baz::~Baz()
+{
+}
+
 int Baz::takesQux(const Qux& qux)
 {
     return qux.farAwayFunc();
@@ -974,6 +1005,10 @@ InheritsProtectedVirtualFromSecondaryBase::InheritsProtectedVirtualFromSecondary
 {
 }
 
+InheritsProtectedVirtualFromSecondaryBase::~InheritsProtectedVirtualFromSecondaryBase()
+{
+}
+
 void InheritsProtectedVirtualFromSecondaryBase::protectedVirtual()
 {
 }
diff --git a/tests/CSharp/CSharp.h b/tests/CSharp/CSharp.h
index 21efb7ba4c..4b42cb604a 100644
--- a/tests/CSharp/CSharp.h
+++ b/tests/CSharp/CSharp.h
@@ -13,9 +13,11 @@ class DLL_API Foo
 public:
     Foo(const QString& name);
     Foo(const char* name = 0);
+    Foo(const Foo& other);
     Foo(int a, int p = 0);
     Foo(char16_t ch);
     Foo(wchar_t ch);
+    ~Foo();
     int method();
     int operator[](int i) const;
     int operator[](unsigned int i);
@@ -38,6 +40,7 @@ class DLL_API Foo
 
     int operator ++();
     int operator --();
+    operator const char*() const;
 
     bool btest[5];
     QFlags<TestFlag> publicFieldMappedToEnum;
@@ -45,6 +48,7 @@ class DLL_API Foo
 protected:
     int P;
     TemplateInAnotherUnit<int> templateInAnotherUnit;
+    std::string _name;
 };
 
 class DLL_API Quux
@@ -93,6 +97,7 @@ class DLL_API Bar : public Qux
     Bar();
     Bar(Qux qux);
     Bar(Items item);
+    ~Bar();
     int method();
     const Foo& operator[](int i) const;
     Foo& operator[](int i);
@@ -121,6 +126,7 @@ class DLL_API ForceCreationOfInterface : public Foo, public Bar
 {
 public:
     ForceCreationOfInterface();
+    ~ForceCreationOfInterface();
 };
 
 class DLL_API Baz : public Foo, public Bar
@@ -136,6 +142,7 @@ class DLL_API Baz : public Foo, public Bar
 
     Baz();
     Baz(Bar::Items item);
+    ~Baz();
 
     int P;
 
@@ -734,6 +741,7 @@ class DLL_API InheritsProtectedVirtualFromSecondaryBase : public InheritanceBuff
 {
 public:
     InheritsProtectedVirtualFromSecondaryBase();
+    ~InheritsProtectedVirtualFromSecondaryBase();
 protected:
     void protectedVirtual();
 };