diff --git a/qapi/block-core.json b/qapi/block-core.json
index f20efc97f7..4c7a37afdc 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1499,11 +1499,8 @@
 #                    autogenerated. (Since: 2.9)
 #
 # Returns: Nothing on success
-#          If commit or stream is already active on this device, DeviceInUse
 #          If @device does not exist, DeviceNotFound
-#          If image commit is not supported by this device, NotSupported
-#          If @base or @top is invalid, a generic error is returned
-#          If @speed is invalid, InvalidParameter
+#          Any other error returns a GenericError.
 #
 # Since: 1.3
 #