diff --git a/src/client/mac/handler/dynamic_images.h b/src/client/mac/handler/dynamic_images.h
index e81ea7f3..01f3a0e9 100644
--- a/src/client/mac/handler/dynamic_images.h
+++ b/src/client/mac/handler/dynamic_images.h
@@ -207,7 +207,8 @@ class DynamicImageRef {
  public:
   explicit DynamicImageRef(DynamicImage* inP) : p(inP) {}
   // The copy constructor is required by STL
-  DynamicImageRef(const DynamicImageRef& inRef) : p(inRef.p) {}
+  DynamicImageRef(const DynamicImageRef& inRef) = default;
+  DynamicImageRef& operator=(const DynamicImageRef& inRef) = default;
 
   bool operator<(const DynamicImageRef& inRef) const {
     return (*const_cast<DynamicImageRef*>(this)->p)