diff --git a/libc/kernel/uapi/sound/asequencer.h b/libc/kernel/uapi/sound/asequencer.h
index 6919149..7918528 100644
--- a/libc/kernel/uapi/sound/asequencer.h
+++ b/libc/kernel/uapi/sound/asequencer.h
@@ -117,7 +117,7 @@
 struct snd_seq_ev_ext {
   unsigned int len;
   void * ptr;
-} __attribute__((packed));
+} __attribute__((__packed__));
 struct snd_seq_result {
   int event;
   int result;
@@ -151,7 +151,7 @@
   struct snd_seq_addr origin;
   unsigned short value;
   struct snd_seq_event * event;
-} __attribute__((packed));
+} __attribute__((__packed__));
 union snd_seq_event_data {
   struct snd_seq_ev_note note;
   struct snd_seq_ev_ctrl control;