diff --git a/image.cpp b/image.cpp
index f26187a6..14293039 100644
--- a/image.cpp
+++ b/image.cpp
@@ -122,6 +122,13 @@ private:
 };
 
 
+//-----------------------------------------------------------------------------
+template <typename T>
+util::image::buffer<T>::buffer (util::extent2u _size):
+    buffer<T> (_size.w, _size.h)
+{ ; }
+
+
 //-----------------------------------------------------------------------------
 template <typename T>
 util::image::buffer<T>::buffer (size_t _w, size_t _h, size_t _s):
diff --git a/image.hpp b/image.hpp
index d26edbb2..8acb8ff2 100644
--- a/image.hpp
+++ b/image.hpp
@@ -17,6 +17,8 @@
 #ifndef __UTIL_IMAGE_HPP
 #define __UTIL_IMAGE_HPP
 
+#include "extent.hpp"
+
 #include <cstdint>
 #include <cstdlib>
 #include <memory>
@@ -29,6 +31,7 @@ namespace util {
         struct buffer {
             typedef T value_type;
 
+            buffer (util::extent2u);
             buffer (size_t w, size_t h);
             buffer (size_t w, size_t h, size_t s);
             buffer (size_t w, size_t h, size_t s, std::unique_ptr<T[]> &&data);