diff --git a/app/api/missions/[missionId]/route.ts b/app/api/missions/[missionId]/route.ts
index dc245fc4..ee24b61b 100644
--- a/app/api/missions/[missionId]/route.ts
+++ b/app/api/missions/[missionId]/route.ts
@@ -160,12 +160,34 @@ export async function PUT(request: Request, props: { params: Promise<{ missionId
       volunteers
     } = body;
 
+    // Process logo URL to get relative path
+    let logoPath = logo;
+    if (logo && typeof logo === 'string') {
+      try {
+        // If it's a full URL, extract the path
+        if (logo.startsWith('http')) {
+          const url = new URL(logo);
+          logoPath = url.pathname.startsWith('/') ? url.pathname.substring(1) : url.pathname;
+        }
+        // If it's already a relative path, ensure it starts with 'missions/'
+        else if (!logo.startsWith('missions/')) {
+          logoPath = `missions/${logo}`;
+        }
+      } catch (error) {
+        console.error('Error processing logo URL:', {
+          error,
+          logo,
+          missionId
+        });
+      }
+    }
+
     // Update the mission data
     const updatedMission = await (prisma as any).mission.update({
       where: { id: missionId },
       data: {
         name,
-        logo,
+        logo: logoPath,
         oddScope: oddScope || undefined,
         niveau,
         intention,