diff --git a/lang/en.json b/lang/en.json
index c6fbfa60..ed8bbebe 100644
--- a/lang/en.json
+++ b/lang/en.json
@@ -94,7 +94,11 @@
   "BOL.ui.misc" : "Divers",
   "BOL.ui.noWeaponName" : "Unknown Weapon",
   "BOL.ui.targetDefence": "Defence",
-  
+  "BOL.ui.applyShieldMalus": "Apply Small Shield Malus",
+  "BOL.ui.shieldMalus": "Shield Malus",
+  "BOL.ui.defenseScore": "Defense Score",
+  "BOL.ui.defender": "Defender",
+
   "BOL.featureCategory.origins": "Origines",
   "BOL.featureCategory.races": "Races",
   "BOL.featureCategory.careers": "Carrières",
diff --git a/lang/fr.json b/lang/fr.json
index 9a150e93..a7c195c1 100644
--- a/lang/fr.json
+++ b/lang/fr.json
@@ -96,6 +96,10 @@
   "BOL.ui.speed" : "Vitesse",
   "BOL.ui.noWeaponName" : "Arme Inconnue",
   "BOL.ui.targetDefence": "Défense",
+  "BOL.ui.applyShieldMalus": "Appliquer le Malus de Petit Bouclier",
+  "BOL.ui.shieldMalus": "Malus de Bouclier",
+  "BOL.ui.defenseScore": "Score de Defense",
+  "BOL.ui.defender": "Défenseur",
 
   "BOL.featureCategory.origins": "Origines",
   "BOL.featureCategory.races": "Races",
diff --git a/module/controllers/bol-rolls.js b/module/controllers/bol-rolls.js
index cee42745..b5f11b95 100644
--- a/module/controllers/bol-rolls.js
+++ b/module/controllers/bol-rolls.js
@@ -69,7 +69,7 @@ export class BoLRoll {
             boons:actorData.features.boons,
             flaws:actorData.features.flaws
         };
-        console.log(dialogData.careers);
+        
         const rollOptionContent = await renderTemplate(rollOptionTpl, dialogData);
         let d = new Dialog({
             title: label,
@@ -118,8 +118,17 @@ export class BoLRoll {
           careers: attackDef.attackerData.features.careers,
           boons: attackDef.attackerData.features.boons,
           flaws: attackDef.attackerData.features.flaws,
-          defence: (attackDef.defender) ? attackDef.defender.defenseValue : 0,
       };
+      if ( attackDef.defender) {
+        dialogData.defence = attackDef.defender.defenseValue,
+        dialogData.shieldBlock = 'none'
+        let shields = attackDef.defender.shields
+        for( let shield of shields) {
+          dialogData.shieldBlock = (shield.data.properties.blocking.blockingAll) ? 'blockall' : 'blockone';
+          dialogData.shieldAttackMalus = (shield.data.properties.blocking.malus)? shield.data.properties.blocking.malus : 1;
+          dialogData.applyShieldMalus = false
+        }
+      }
       const rollOptionContent = await renderTemplate(rollOptionTpl, dialogData);
       let d = new Dialog({
           title: attackDef.label,
@@ -139,13 +148,20 @@ export class BoLRoll {
                       const apt = html.find('#apt').val();
                       const adv = html.find('#adv').val();
                       const mod = html.find('#mod').val() || 0;
+
+                      let shieldMalus = 0;
+                      const applyShieldMalus = html.find('#applyShieldMalus').val() || false;
+                      if (applyShieldMalus || dialogData.shieldBlock =='blockall') {
+                        shieldMalus = dialogData.shieldAttackMalus;
+                      }
+
                       let careers = html.find('#career').val();
                       const career = (careers.length == 0) ? 0 : Math.max(...careers.map(i => parseInt(i)));
                       const isMalus = adv < 0;
                       const dicePool = (isMalus) ? 2 - parseInt(adv) : 2 + parseInt(adv);
                       const attrValue = eval(`attackDef.attacker.data.data.attributes.${attr}.value`);
                       const aptValue = eval(`attackDef.attacker.data.data.aptitudes.${apt}.value`);
-                      const modifiers = parseInt(attrValue) + parseInt(aptValue) + parseInt(mod) + parseInt(career) - dialogData.defence;
+                      const modifiers = parseInt(attrValue) + parseInt(aptValue) + parseInt(mod) + parseInt(career) - dialogData.defence - shieldMalus;
                       const formula = (isMalus) ? dicePool + "d6kl2 + " + modifiers : dicePool + "d6kh2 + " + modifiers;
                       attackDef.formula = formula;
                       let r = new BoLAttackRoll(attackDef);
diff --git a/system.json b/system.json
index 1192c7d6..d5fefc5f 100644
--- a/system.json
+++ b/system.json
@@ -9,7 +9,7 @@
   "flags": {},
   "version": "0.8.9.0",
   "minimumCoreVersion": "0.8.6",
-  "compatibleCoreVersion": "0.8.9",
+  "compatibleCoreVersion": "9",
   "scripts": [],
   "esmodules": [
     "module/bol.js"
diff --git a/templates/dialogs/weapon-roll-dialog.hbs b/templates/dialogs/weapon-roll-dialog.hbs
index c66e99a6..036168ee 100644
--- a/templates/dialogs/weapon-roll-dialog.hbs
+++ b/templates/dialogs/weapon-roll-dialog.hbs
@@ -55,6 +55,26 @@
         </div>
         <div class="flex1 center cell">{{defence}}</div>
     </div>
+      {{#if (eq shieldBlock 'blockall')}}
+      <div class="flexrow" style="margin-bottom: 1px;">
+          <div class="flex1 center bg-darkred">
+              <label for="mod">{{localize 'BOL.ui.shieldMalus'}}</label>
+          </div>
+          <div class="flex1 center cell">{{shieldAttackMalus}}</div>
+      </div>
+      {{/if}}
+      {{#if (eq shieldBlock 'blockone')}}
+      <div class="flexrow" style="margin-bottom: 1px;">
+          <div class="flex1 center bg-darkred">
+              <label for="mod">{{localize 'BOL.ui.shieldMalus'}}</label>
+          </div>
+          <div class="flex1 center cell">
+            <label class="checkbox">
+              <input class="field-value" type="checkbox" id="applyShieldMalus" name="applyShieldMalus" {{checked applyShieldMalus}}> {{localize "BOL.ui.applyShieldMalus"}}
+            </label>
+          </div>
+      </div>
+      {{/if}}
     {{#if careers.items}}
     <div class="flexrow" style="margin-bottom: 1px;">
         <div class="flex1 center bg-darkred">
diff --git a/templates/roll/roll-dialog-weapon.hbs b/templates/roll/roll-dialog-weapon.hbs
index 5e19670f..b9278d26 100644
--- a/templates/roll/roll-dialog-weapon.hbs
+++ b/templates/roll/roll-dialog-weapon.hbs
@@ -1,11 +1,11 @@
 <form class="skill-roll-dialog">
     {{#if defender}}
         <div class="property flexrow">
-            <label class="property-label">{{localize "Defender"}} : </label>
+            <label class="property-label">{{localize "BOL.ui.defender"}} : </label>
             <label class="property-label">{{defender.name}}</label>
         </div>
         <div class="property flexrow">
-            <label class="property-label">{{localize "Defense score"}}</label>
+            <label class="property-label">{{localize "BOL.ui.defenseScore"}}</label>
             <label class="property-label">{{defender.data.aptitudes.def.value}}</label>
         </div>
     {{/if}}