1 files changed, 2 insertions, 2 deletions
diff --git a/src/ack.h b/src/ack.h
index 1bba007ca..01d90dab6 100644
--- a/src/ack.h
+++ b/src/ack.h
@@ -16,8 +16,8 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#ifndef ACK_H
-#define ACK_H
+#ifndef MPD_ACK_H
+#define MPD_ACK_H
 
 enum ack {
 	ACK_ERROR_NOT_LIST = 1,