diff --git a/manifests/conf.pp b/manifests/conf.pp
index f1d78917..2e51942f 100644
--- a/manifests/conf.pp
+++ b/manifests/conf.pp
@@ -22,11 +22,11 @@
 # === Parameters:
 #
 # [*args*] A Ceph config hash.
-#   Mandatory.
+#   Optional.
 #
 # [*defaults*] A config hash
 #   Optional. Defaults to a empty hash
 #
-class ceph::conf($args, $defaults = {}) {
+class ceph::conf($args = {}, $defaults = {}) {
   create_resources(ceph_config, $args, $defaults)
 }
diff --git a/manifests/keys.pp b/manifests/keys.pp
index 090489aa..6c7bdcc5 100644
--- a/manifests/keys.pp
+++ b/manifests/keys.pp
@@ -22,11 +22,11 @@
 # === Parameters:
 #
 # [*args*] A Ceph keys config hash
-#   Mandatory.
+#   Optional.
 #
 # [*defaults*] A keys config hash
 #   Optional. Defaults to a empty hash.
 #
-class ceph::keys($args, $defaults = {}) {
+class ceph::keys($args = {}, $defaults = {}) {
   create_resources(ceph::key, $args, $defaults)
 }
diff --git a/manifests/mons.pp b/manifests/mons.pp
index 3998b651..c71ac8b0 100644
--- a/manifests/mons.pp
+++ b/manifests/mons.pp
@@ -22,11 +22,11 @@
 # === Parameters:
 #
 # [*args*] A Ceph mons config hash
-#   Mandatory.
+#   Optional.
 #
 # [*defaults*] A config hash
 #   Optional. Defaults to a empty hash
 #
-class ceph::mons($args, $defaults = {}) {
+class ceph::mons($args = {}, $defaults = {}) {
   create_resources(ceph::mon, $args, $defaults)
 }
diff --git a/manifests/osds.pp b/manifests/osds.pp
index 83b18da5..f20b6035 100644
--- a/manifests/osds.pp
+++ b/manifests/osds.pp
@@ -22,11 +22,11 @@
 # === Parameters:
 #
 # [*args*] A Ceph osds config hash
-#   Mandatory.
+#   Optional.
 #
 # [*defaults*] A config hash
 #   Optional. Defaults to a empty hash
 #
-class ceph::osds($args, $defaults = {}) {
+class ceph::osds($args = {}, $defaults = {}) {
   create_resources(ceph::osd, $args, $defaults)
 }