diff --git a/cdist/conf/type/__install_partition_msdos/man.rst b/cdist/conf/type/__install_partition_msdos/man.rst
index aa194110..c408a614 100644
--- a/cdist/conf/type/__install_partition_msdos/man.rst
+++ b/cdist/conf/type/__install_partition_msdos/man.rst
@@ -19,6 +19,12 @@ type
 
 OPTIONAL PARAMETERS
 -------------------
+device
+   the device we're working on. Defaults to the string prefix of --partition
+
+minor
+   the partition number we're working on. Defaults to the numeric suffix of --partition
+
 partition
    defaults to object_id