1 files changed, 1 insertions, 0 deletions
diff --git a/src/ack.h b/src/ack.h
index 839452e90..b1ae0d6d5 100644
--- a/src/ack.h
+++ b/src/ack.h
@@ -12,5 +12,6 @@
 #define ACK_ERROR_PLAYLIST_LOAD		9
 #define ACK_ERROR_UPDATE_ALREADY	10
 #define ACK_ERROR_PLAYER_SYNC		11
+#define ACK_ERROR_EXIST			12
 
 #endif