:: commit 6d041f4a063d13d5c1dafdaf3220c863911a2bdb

diff --git a/include/libbz3.h b/include/libbz3.h
index a99c9d5..5e9f723 100644
--- a/include/libbz3.h
+++ b/include/libbz3.h
@@ -17,8 +17,8 @@
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef _LIBBZ3_H
-#define _LIBBZ3_H
+#ifndef LIBBZ3_H
+#define LIBBZ3_H
 
 #include <stddef.h>
 #include <stdint.h>