diff --git a/Source/buildbindingccpp.go b/Source/buildbindingccpp.go
index 5995eae2..c54855f8 100644
--- a/Source/buildbindingccpp.go
+++ b/Source/buildbindingccpp.go
@@ -1207,16 +1207,17 @@ func writeClassParamDefinition(w LanguageWriter, NameSpace string) {
 	w.Writeln("")
 	w.Writeln("template<class T> class classParam {")
 	w.Writeln("private:")
+	w.Writeln("  std::shared_ptr<T> m_sharedPtr;")
 	w.Writeln("  const T* m_ptr;")
 	w.Writeln("")
 	w.Writeln("public:")
 	w.Writeln("  classParam(const T* ptr)")
-	w.Writeln("    : m_ptr (ptr)")
+	w.Writeln("    : m_ptr(ptr)")
 	w.Writeln("  {")
 	w.Writeln("  }")
 	w.Writeln("")
 	w.Writeln("  classParam(std::shared_ptr <T> sharedPtr)")
-	w.Writeln("    : m_ptr (sharedPtr.get())")
+	w.Writeln("    : m_sharedPtr(sharedPtr), m_ptr(sharedPtr.get())")
 	w.Writeln("  {")
 	w.Writeln("  }")
 	w.Writeln("")