diff --git a/src/tag/TagPool.cxx b/src/tag/TagPool.cxx
index 8e1e670c9..5f7a041cd 100644
--- a/src/tag/TagPool.cxx
+++ b/src/tag/TagPool.cxx
@@ -35,7 +35,7 @@ struct slot {
 	struct slot *next;
 	unsigned char ref;
 	TagItem item;
-} mpd_packed;
+} gcc_packed;
 
 static struct slot *slots[NUM_SLOTS];