1 files changed, 8 insertions, 7 deletions
diff --git a/src/jpeg-utils.h b/src/jpeg-utils.h
index 6e0dc9c..e5845bc 100644
--- a/src/jpeg-utils.h
+++ b/src/jpeg-utils.h
@@ -15,14 +15,15 @@
  *   along with this program; if not, write to the Free Software
  *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
-
-#ifdef __cplusplus
-  extern "C" {
-#endif
+#ifndef __CGG__JPEG_UTILS_H__
+#define __CGG__JPEG_UTILS_H__
 
 #include <glib.h>
 #include "setup.h"
 
+G_BEGIN_DECLS
+
+
 #define SQUARED_SIMPLE_SHAVE_AMOUNT 5  /* percent */
 
 
@@ -93,6 +94,6 @@ void calculate_sizes (const unsigned long max_width, const unsigned long max_hei
 void modify_exif (const gchar *filename, gboolean strip_thumbnail, const gchar *add_copyright);
 
 
-#ifdef __cplusplus
-  }
-#endif
+G_END_DECLS
+
+#endif /* __CGG__JPEG_UTILS_H__ */