diff --git a/app/api/events/route.ts b/app/api/events/route.ts
index 0e4255ea..550bfe1b 100644
--- a/app/api/events/route.ts
+++ b/app/api/events/route.ts
@@ -66,10 +66,20 @@ export async function PUT(req: NextRequest) {
   }
 
   try {
-    const { id, title, description, start, end, allDay, location, calendarId } = await req.json();
+    const data = await req.json();
+    console.log("Received event update data:", data);
+
+    const { id, title, description, start, end, allDay, location, calendarId } = data;
 
     // Validation
     if (!id || !title || !start || !end || !calendarId) {
+      console.log("Validation failed. Missing fields:", {
+        id: !id,
+        title: !title,
+        start: !start,
+        end: !end,
+        calendarId: !calendarId
+      });
       return NextResponse.json(
         { error: "ID, titre, début, fin et calendrier sont requis" },
         { status: 400 }
@@ -91,7 +101,13 @@ export async function PUT(req: NextRequest) {
       }
     });
 
+    console.log("Found calendar:", calendar);
+
     if (!calendar || calendar.events.length === 0) {
+      console.log("Calendar or event not found:", {
+        calendarFound: !!calendar,
+        eventsFound: calendar?.events.length
+      });
       return NextResponse.json(
         { error: "Événement non trouvé ou non autorisé" },
         { status: 404 }
@@ -111,6 +127,7 @@ export async function PUT(req: NextRequest) {
       },
     });
 
+    console.log("Updated event:", event);
     return NextResponse.json(event);
   } catch (error) {
     console.error("Erreur lors de la mise à jour de l'événement:", error);
diff --git a/components/calendar/calendar-client.tsx b/components/calendar/calendar-client.tsx
index 640f0db5..1dcab9e4 100644
--- a/components/calendar/calendar-client.tsx
+++ b/components/calendar/calendar-client.tsx
@@ -695,7 +695,9 @@ export function CalendarClient({ initialCalendars, userId, userProfile }: Calend
         ...eventForm,
         start: new Date(eventForm.start).toISOString(),
         end: new Date(eventForm.end).toISOString(),
-        userId
+        userId,
+        ...(selectedEvent ? { id: selectedEvent.id } : {}),  // Include ID for updates
+        allDay: eventForm.allDay  // Use allDay instead of isAllDay
       };
 
       console.log("Submitting event with data:", eventData);