diff --git a/Rougail/socle/05-omogen.yml b/Rougail/socle/05-omogen.yml
new file mode 100644
index 0000000..c15360e
--- /dev/null
+++ b/Rougail/socle/05-omogen.yml
@@ -0,0 +1,15 @@
+---
+version: '1.0'
+env_omogen:
+  description: Configure OMOGEN
+  keystore:
+    description: Keystore filename to access to OMOGEN
+    help: This filename must ends with "kjs" extension
+    test:
+      - java.jks
+    validators:
+      - type: jinja
+        jinja: |
+          {% if not socle.env_omogen.keystore.endswith('.jks') %}
+          the extension must be "jks"
+          {% endif %}