diff --git a/libraries/libfc/include/fc/variant_object.hpp b/libraries/libfc/include/fc/variant_object.hpp
index 12e5aeccd8..e687a5a50c 100644
--- a/libraries/libfc/include/fc/variant_object.hpp
+++ b/libraries/libfc/include/fc/variant_object.hpp
@@ -214,7 +214,8 @@ namespace fc
 
       template<typename T,
                typename = std::enable_if_t<!std::is_base_of<mutable_variant_object, std::decay_t<T>>::value &&
-                                           !std::is_base_of<variant, std::decay_t<T>>::value>>
+                                           !std::is_base_of<variant, std::decay_t<T>>::value &&
+                                           !std::is_base_of<variant_object, std::decay_t<T>>::value>>
       explicit mutable_variant_object( T&& v )
       :_key_value( new std::vector<entry>() )
       {