diff --git a/src/bsoncxx/types/bson_value/view.cpp b/src/bsoncxx/types/bson_value/view.cpp
index 72dbe1429f..abbdbb7c13 100644
--- a/src/bsoncxx/types/bson_value/view.cpp
+++ b/src/bsoncxx/types/bson_value/view.cpp
@@ -89,6 +89,7 @@ view& view::operator=(const view& rhs) noexcept {
         break;
 #include <bsoncxx/enums/type.hpp>
 #undef BSONCXX_ENUM
+default : break;
     }
 
     _type = rhs._type;