diff --git a/CMakeLists.txt b/CMakeLists.txt
index e7c3f0a..c4959b2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,6 +34,7 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   set(FLAGS "${FLAGS} -Wno-c++98-compat-pedantic -Wno-padded")
   set(FLAGS "${FLAGS} -Wno-float-equal")
   set(FLAGS "${FLAGS} -Wno-weak-template-vtables")
+  set(FLAGS "${FLAGS} -Wno-unsafe-buffer-usage")
 elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
   set(FLAGS "${FLAGS} -fno-omit-frame-pointer -fmax-errors=1")
   set(FLAGS "${FLAGS} -Werror -Wall -Wextra")
diff --git a/gmodel.hpp b/gmodel.hpp
index a857015..2bd6240 100644
--- a/gmodel.hpp
+++ b/gmodel.hpp
@@ -166,7 +166,7 @@ struct Point : public Object {
   Vector pos;
   double size;
   Point();
-  ~Point();
+  ~Point() override;
 };
 
 typedef std::shared_ptr<Point> PointPtr;