diff --git a/dev/input/grid5000/sites/grenoble/pdus.yaml b/dev/input/grid5000/sites/grenoble/pdus.yaml
index 8520357cfebfd5367e4e028013aae655a899e632..93293e2aea50afd5e5a688c4be030e734b329700 100644
--- a/dev/input/grid5000/sites/grenoble/pdus.yaml
+++ b/dev/input/grid5000/sites/grenoble/pdus.yaml
@@ -1,4 +1,4 @@
-pdu:
+pdus:
 
   adonis-pdu-[1-2]:
     vendor: Eaton Corporation
diff --git a/dev/input/grid5000/sites/nancy/pdus.yaml b/dev/input/grid5000/sites/nancy/pdus.yaml
index d1ab3c123fd194ea0b188b8d6c0a39be6ecd4f14..caf15a1c46f8c7c5dcd97d740457500b556df8f0 100644
--- a/dev/input/grid5000/sites/nancy/pdus.yaml
+++ b/dev/input/grid5000/sites/nancy/pdus.yaml
@@ -1,4 +1,4 @@
-pdu: 
+pdus: 
   graphene-pdu[7-9]:
     vendor: Eaton Corporation
     model: ''
diff --git a/dev/input/grid5000/sites/reims/pdus.yaml b/dev/input/grid5000/sites/reims/pdus.yaml
index ec437e6081c3597a01079739e217999c98b095f0..25a93d4d77e3c8c12468e7d6b8d3f9dec53deb46 100644
--- a/dev/input/grid5000/sites/reims/pdus.yaml
+++ b/dev/input/grid5000/sites/reims/pdus.yaml
@@ -1,4 +1,4 @@
-pdu:
+pdus:
 
   stremi-pdu[1-3]:
     vendor: Raritan
diff --git a/dev/input/grid5000/sites/rennes/pdus.yaml b/dev/input/grid5000/sites/rennes/pdus.yaml
index 0a4b2b0bd2a95b5b723576a086252b58e5a11469..2c57803338c4b236ff5914a192bae606c686a1ca 100644
--- a/dev/input/grid5000/sites/rennes/pdus.yaml
+++ b/dev/input/grid5000/sites/rennes/pdus.yaml
@@ -1,4 +1,4 @@
-pdu:
+pdus:
 
   parapide-pdu-[1-4]:
     vendor: APC
diff --git a/dev/reference-api/reference-api.rb b/dev/reference-api/reference-api.rb
index 883bedb6c4064332ecdb3f998120ef45ea99392b..0c7520a0d3faab1ab9d54db03f2852d166c6a89d 100644
--- a/dev/reference-api/reference-api.rb
+++ b/dev/reference-api/reference-api.rb
@@ -71,7 +71,7 @@ global_hash["sites"].each do |site_uid, site|
   site_path.mkpath()
 
   write_json(site_path.join("#{site_uid}.json"), 
-             site.reject {|k, v| k == "clusters" || k == "networks" || k == "pdu" || k == "dom0" || k == "laptops" || k == "servers" })
+             site.reject {|k, v| k == "clusters" || k == "networks" || k == "pdus" || k == "dom0" || k == "laptops" || k == "servers" })
 
   #
   # Write pdu info