diff --git a/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java b/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java
index 2bbd368..31838d3 100644
--- a/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java
+++ b/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java
@@ -163,6 +163,7 @@ public class PropertyChecker
         this.serviceRules.add("software.license.name", STRING, PropertyMode.MANDATORY);
         this.serviceRules.add("software.version", STRING, PropertyMode.WISHED);
         this.serviceRules.add("software.source.url", URL, PropertyMode.WISHED);
+        this.serviceRules.add("software.modules", STRING, PropertyMode.OPTIONAL);
 
         this.serviceRules.add("host.name", STRING, PropertyMode.MANDATORY);
         this.serviceRules.add("host.description", STRING, PropertyMode.OPTIONAL);