--- a/src/plugins/exiv2_extractor.cc	2013-06-25 13:02:05.000000000 +0200
+++ b/src/plugins/exiv2_extractor.cc	2017-06-10 14:22:57.000000000 +0200
@@ -180,7 +180,11 @@
    *
    * @return -1 on error
    */
+#if EXIV2_VERSION >= EXIV2_MAKE_VERSION(0,26,0)
+  virtual size_t size (void) const;
+#else
   virtual long int size (void) const;
+#endif
 
   /**
    * Check if file is open.
@@ -445,7 +449,11 @@
  *
  * @return -1 on error
  */
-long int 
+#if EXIV2_VERSION >= EXIV2_MAKE_VERSION(0,26,0)
+size_t
+#else
+long int
+#endif
 ExtractorIO::size (void) const
 {
   return (long) ec->get_size (ec->cls);