diff --git a/fs/xfs/xfs_extent_busy.c b/fs/xfs/xfs_extent_busy.c
index ab062610234e072e20ee4530a740713733842d83..77760dbf0242ee9b2f191c6fcf6329e3e2389ae8 100644
--- a/fs/xfs/xfs_extent_busy.c
+++ b/fs/xfs/xfs_extent_busy.c
@@ -353,7 +353,7 @@ xfs_extent_busy_trim(
 	struct rb_node		*rbp;
 	bool			ret = false;
 
-	ASSERT(len > 0);
+	ASSERT(*len > 0);
 
 	spin_lock(&args->pag->pagb_lock);
 restart: