diff --git a/src/components/ToolCall.tsx b/src/components/ToolCall.tsx
index 69988b0..141b1c4 100644
--- a/src/components/ToolCall.tsx
+++ b/src/components/ToolCall.tsx
@@ -207,7 +207,7 @@ export function ToolCall({ name, input, result }: { name: string; input?: any; r
         <div className={`mt-2 rounded-2xl border ${c.expandBorder} ${c.expandBg} p-3 space-y-2`}>
           {inputStr && (
             <div>
-              <div className={`text-[11px] ${c.text} opacity-70 mb-1 font-medium`}>Paramètres</div>
+              <div className={`text-[11px] ${c.text} opacity-70 mb-1 font-medium`}>{t('tool.parameters')}</div>
               <HighlightedPre
                 text={inputStr}
                 className="text-xs bg-[#1a1a20]/60 border border-white/5 p-2.5 rounded-xl overflow-x-auto text-zinc-300 font-mono"
diff --git a/src/lib/i18n.ts b/src/lib/i18n.ts
index 495e9cf..1ad43cc 100644
--- a/src/lib/i18n.ts
+++ b/src/lib/i18n.ts
@@ -47,6 +47,7 @@ const en = {
   'thinking.label': 'Thinking',
 
   // Tool call
+  'tool.parameters': 'Parameters',
   'tool.result': 'Result',
 
   // Connection banner
@@ -91,6 +92,7 @@ const fr: Record<keyof typeof en, string> = {
 
   'thinking.label': 'Réflexion',
 
+  'tool.parameters': 'Paramètres',
   'tool.result': 'Résultat',
 
   'connection.reconnecting': 'Connexion perdue — reconnexion…',