diff --git a/frontend/src/components/competition/ProjectSubmission.jsx b/frontend/src/components/competition/ProjectSubmission.jsx
index 8ac9376..ee8da4e 100644
--- a/frontend/src/components/competition/ProjectSubmission.jsx
+++ b/frontend/src/components/competition/ProjectSubmission.jsx
@@ -240,8 +240,10 @@ const ProjectSubmission = ({ competitionId, initialValues, onCancel, onSuccess }
               console.log('Cover image selected:', file.name, 'activeProjectId:', activeProjectId);
               
               const doUpload = (projectId) => {
+                console.log('Uploading cover for project:', projectId);
                 const formData = new FormData();
                 formData.append('file', file);
+                formData.append('project', projectId);
                 
                 uploadProjectFile(formData)
                   .then(res => {