diff --git a/bch_bindgen/src/libbcachefs_wrapper.h b/bch_bindgen/src/libbcachefs_wrapper.h
index 5dac92bc..bc4658fb 100644
--- a/bch_bindgen/src/libbcachefs_wrapper.h
+++ b/bch_bindgen/src/libbcachefs_wrapper.h
@@ -33,3 +33,5 @@ MARK_FIX_753(blk_mode_t, BLK_OPEN_READ);
 MARK_FIX_753(blk_mode_t, BLK_OPEN_WRITE);
 MARK_FIX_753(blk_mode_t, BLK_OPEN_EXCL);
 
+MARK_FIX_753(__u64, BCH_IOCTL_SUBVOLUME_CREATE);
+MARK_FIX_753(__u64, BCH_IOCTL_SUBVOLUME_DESTROY);