diff --git a/lang/fr.json b/lang/fr.json
index 86fbee0..7fac37f 100644
--- a/lang/fr.json
+++ b/lang/fr.json
@@ -128,9 +128,11 @@
   "BOL.ui.difficulty": "Difficulté",
   "BOL.ui.spellProperties": "Propriétés du Sort",
   "BOL.ui.duration": "Durée",
-  "BOL.ui.spellkeep": "Prolongation",
-  "BOL.ui.concentrate": "Concentration",
+  "BOL.ui.spellkeep": "Prolongation possible ?",
+  "BOL.ui.concentrate": "Concentration à maintenir ?",
+  "BOL.ui.aggressive": "Sort aggressif ?", 
   "BOL.ui.registerInit": "Enregistrer comme Init. de combat",
+  "BOL.ui.magicnewrules": "Règles supplémentaires (cf. supplément fan-made Sorcellerie!)",
   
   "BOL.ui.isSorcerer": "Carrière de Sorcier ?",
   "BOL.ui.isAlchemist": "Carrière d'Alchimiste ?",
diff --git a/system.json b/system.json
index 34a1634..845f942 100644
--- a/system.json
+++ b/system.json
@@ -14,7 +14,7 @@
   ],
   "url": "https://www.uberwald.me/gitea/public/bol",
   "license": "LICENSE.txt",
-  "version": "10.5.3",
+  "version": "10.5.4",
   "compatibility": {
     "minimum": "10",
     "verified": "10"
@@ -34,7 +34,7 @@
     },
     {
       "lang": "fr",
-      "name": "Français",
+      "name": "Français (BoL)",
       "path": "lang/fr.json",
       "flags": {}
     },
@@ -202,7 +202,7 @@
   ],
   "socket": true,
   "manifest": "https://www.uberwald.me/gitea/public/bol/raw/v10/system.json",
-  "download": "https://www.uberwald.me/gitea/public/bol/archive/bol-v10.5.3.zip",
+  "download": "https://www.uberwald.me/gitea/public/bol/archive/bol-v10.5.4.zip",
   "background": "systems/bol/ui/page_accueil.webp",
   "gridDistance": 1.5,
   "gridUnits": "m",
diff --git a/templates/item/parts/properties/item/spell-properties.hbs b/templates/item/parts/properties/item/spell-properties.hbs
index e04855b..aaaf29c 100644
--- a/templates/item/parts/properties/item/spell-properties.hbs
+++ b/templates/item/parts/properties/item/spell-properties.hbs
@@ -74,7 +74,7 @@
       </select>
   </div>
 
-    {{#each item.system.optionnalconditions as |cond idx|}}
+    {{#each item.system.properties.optionnalconditions as |cond idx|}}
       {{#if (lt idx @root.item.system.properties.nboptionnalconditions)}}
       <div class="property flexrow">
         <label class="property-label">{{localize "BOL.ui.optionnalconditions"}} {{add idx 1}}</label>
@@ -83,6 +83,8 @@
       {{/if}}
     {{/each}}
 
+  <h4><label class="property-label">{{localize "BOL.ui.magicnewrules"}} : </label></h4>
+
   <div class="property flexrow">
     <div class="form-fields center">
         <label class="checkbox">
@@ -94,4 +96,9 @@
             <input class="field-value" type="checkbox" name="system.properties.concentrate" {{checked item.system.properties.concentrate}}> {{localize "BOL.ui.concentrate"}}
         </label>
       </div>
+      <div class="form-fields center">
+        <label class="checkbox">
+            <input class="field-value" type="checkbox" name="system.properties.aggressive" {{checked item.system.properties.aggressive}}> {{localize "BOL.ui.aggressive"}}
+        </label>
+      </div>
   </div>