diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 80aaca18bfb0681f34fe87e11cdfd645c15a19fe..0be180f9a789904b00d18bbf9505f24bb93f31e7 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -39,11 +39,6 @@ struct latency_bucket {
 	int samples;
 };
 
-struct avg_latency_bucket {
-	unsigned long latency; /* ns / 1024 */
-	bool valid;
-};
-
 struct throtl_data
 {
 	/* service tree for active throtl groups */