diff --git a/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java b/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java
index de04922..abaf77c 100644
--- a/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java
+++ b/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java
@@ -112,7 +112,7 @@ public class PropertyChecker
         this.organizationRules.add("organization.website", URL, PropertyMode.WISHED);
         this.organizationRules.add("organization.logo", URL, PropertyMode.WISHED);
         this.organizationRules.add("organization.socialnetworks.*", "^organization\\.socialnetworks\\.\\S+$", URL, PropertyMode.OPTIONAL);
-        this.organizationRules.add("organization.chatrooms.*", "^organization\\.chatrooms\\.\\S+$", URL, PropertyMode.OPTIONAL);
+        this.organizationRules.add("organization.chatrooms.*", "^organization\\.chatrooms\\.\\S+$", STRING, PropertyMode.OPTIONAL);
         this.organizationRules.add("organization.owner.name", STRING, PropertyMode.OPTIONAL);
         this.organizationRules.add("organization.owner.website", URL, PropertyMode.OPTIONAL);
         this.organizationRules.add("organization.owner.logo", URL, PropertyMode.OPTIONAL);