diff --git a/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java b/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java
index 693acd4..5d24b24 100644
--- a/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java
+++ b/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java
@@ -137,6 +137,7 @@ public class PropertyChecker
         this.organizationRules.add("organization.geolocation.latitude", DECIMAL_DEGREE, PropertyMode.OPTIONAL);
         this.organizationRules.add("organization.geolocation.longitude", DECIMAL_DEGREE, PropertyMode.OPTIONAL);
         this.organizationRules.add("organization.geolocation.address", STRING, PropertyMode.OPTIONAL);
+        this.organizationRules.add("organization.type", "^(ASSOCIATION|INFORMAL|COOPERATIVE|MICROCOMPANY|COMPANY|INDIVIDUAL|OTHER)$", PropertyMode.MANDATORY);
 
         this.organizationRules.add(SUBS, URL, PropertyMode.OPTIONAL);
         this.organizationRules.add(METRICS_NAME, STRING, PropertyMode.OPTIONAL);