1 files changed, 3 insertions, 1 deletions
diff --git a/src/ack.h b/src/ack.h
index 440bc27d8..b76fae17d 100644
--- a/src/ack.h
+++ b/src/ack.h
@@ -20,6 +20,8 @@
 #ifndef MPD_ACK_H
 #define MPD_ACK_H
 
+#include "gcc.h"
+
 #include <glib.h>
 
 enum ack {
@@ -41,7 +43,7 @@ enum ack {
 /**
  * Quark for GError.domain; the code is an enum #ack.
  */
-G_GNUC_CONST
+gcc_const
 static inline GQuark
 ack_quark(void)
 {