diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index a7e8cef73d15..d95615fc6da5 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -11,7 +11,7 @@ enum blktrace_cat {
 	BLK_TC_READ	= 1 << 0,	/* reads */
 	BLK_TC_WRITE	= 1 << 1,	/* writes */
 	BLK_TC_BARRIER	= 1 << 2,	/* barrier */
-	BLK_TC_SYNC	= 1 << 3,	/* barrier */
+	BLK_TC_SYNC	= 1 << 3,	/* sync IO */
 	BLK_TC_QUEUE	= 1 << 4,	/* queueing/merging */
 	BLK_TC_REQUEUE	= 1 << 5,	/* requeueing */
 	BLK_TC_ISSUE	= 1 << 6,	/* issue */