diff --git a/frontend/src/dataloaders/loader_helpers/SharedFunctions.ts b/frontend/src/dataloaders/loader_helpers/SharedFunctions.ts
index 4c3add76..9f4b6cda 100644
--- a/frontend/src/dataloaders/loader_helpers/SharedFunctions.ts
+++ b/frontend/src/dataloaders/loader_helpers/SharedFunctions.ts
@@ -54,7 +54,7 @@ export async function coursesLoader(role: teacherStudentRole, course_id?: number
         if (courseProjects.length === 0) {
             return {
                 active_projects: 0,
-                first_deadline: null,
+                first_deadline: "-",
                 project_archived: false,
                 project_visible: false,
                 all_projects: [],
@@ -63,7 +63,7 @@ export async function coursesLoader(role: teacherStudentRole, course_id?: number
                 course_archived: course.course_archived,
                 course_id: course.course_id,
                 course_name: course.course_name
-            };
+            } as properCourse;
         }
 
         const firstDeadline = getFirstUpcomingDeadline(courseProjects);
@@ -96,10 +96,10 @@ function getSmallProjectInfo(project: Project): SmallProjectInfo {
 }
 
 
-function getFirstUpcomingDeadline(courseProjects: Project[]): string | Date {
+function getFirstUpcomingDeadline(courseProjects: Project[]): string {
     const filtered = courseProjects.filter(course => course.project_visible && !course.project_archived);
     if (filtered.length === 0) {
-      return "";
+      return "-";
     }
     const first_deadline = filtered.reduce((minProject, project) => {
         if (project.project_deadline < minProject.project_deadline) {
diff --git a/frontend/src/pages/student/CoursesViewStudent.tsx b/frontend/src/pages/student/CoursesViewStudent.tsx
index add7b240..03ebb676 100644
--- a/frontend/src/pages/student/CoursesViewStudent.tsx
+++ b/frontend/src/pages/student/CoursesViewStudent.tsx
@@ -23,13 +23,9 @@ export default function CoursesViewStudent(): JSX.Element {
 
     const tableCoursesActive: TableRowCourses[] = active_courses.map((course: properCourse) => {
 
-        const deadline_date = course.first_deadline ? new Date(course.first_deadline) : null
-
-        let deadline = null
-        if (deadline_date !== null) {
-            deadline = deadline_to_string(deadline_date)
-        } else {
-            deadline = "-"
+        let deadline = "-"
+        if (course.first_deadline) {
+            deadline = deadline_to_string(course.first_deadline)
         }
 
         return {
diff --git a/frontend/src/pages/teacher/CoursesViewTeacher.tsx b/frontend/src/pages/teacher/CoursesViewTeacher.tsx
index 5bb81e08..948aaf6c 100644
--- a/frontend/src/pages/teacher/CoursesViewTeacher.tsx
+++ b/frontend/src/pages/teacher/CoursesViewTeacher.tsx
@@ -19,11 +19,9 @@ export default function CoursesViewTeacher(): JSX.Element {
     const archived_courses = data.courses.filter(course => course.course_archived);
 
     const tableCoursesActive: TableRowCourses[] = active_courses.map(course => {
-        const deadline_date = course.first_deadline ? new Date(course.first_deadline) : "-"
-
-        let deadline = deadline_date
+        let deadline = "-"
         if (course.first_deadline) {
-            deadline = deadline_to_string(deadline_date)
+            deadline = deadline_to_string(course.first_deadline)
         }
 
         return {
diff --git a/frontend/src/utils/ApiInterfaces.ts b/frontend/src/utils/ApiInterfaces.ts
index 026d7606..6d7e4fad 100644
--- a/frontend/src/utils/ApiInterfaces.ts
+++ b/frontend/src/utils/ApiInterfaces.ts
@@ -9,7 +9,7 @@ export interface Course {
 export interface Project {
     project_id: number,
     project_name: string,
-    project_deadline: string | Date,
+    project_deadline: string,
     project_archived: boolean,
     project_description: string,
     project_requirements: string,
@@ -63,14 +63,14 @@ export interface CompleteProjectTeacher extends CompleteProject {
 export interface SmallProjectInfo {
     project_id: number,
     project_name: string,
-    project_deadline: Date | string,
+    project_deadline: string,
     project_archived: boolean,
     project_visible: boolean,
 }
 
 export interface properCourse extends Course {
     active_projects: number,
-    first_deadline: Date | null | string,
+    first_deadline: string,
     all_projects: SmallProjectInfo[] | null,
     teachers: SmallUserInfo[],
     students: SmallUserInfo[]
diff --git a/frontend/src/utils/BackendInterfaces.ts b/frontend/src/utils/BackendInterfaces.ts
index d69a081d..e753e76e 100644
--- a/frontend/src/utils/BackendInterfaces.ts
+++ b/frontend/src/utils/BackendInterfaces.ts
@@ -9,7 +9,7 @@ export interface Backend_Course {
 export interface Backend_Project {
     id: number,
     name: string,
-    deadline: string | Date,
+    deadline: string,
     archived: boolean,
     description: string,
     requirements: string,
diff --git a/frontend/src/utils/helper.ts b/frontend/src/utils/helper.ts
index 3398f217..934b2234 100644
--- a/frontend/src/utils/helper.ts
+++ b/frontend/src/utils/helper.ts
@@ -1,10 +1,10 @@
 
-export function deadline_to_string(deadline: Date | string){
+export function deadline_to_string(deadline: string){
     const deadline_date = new Date(deadline)
     const hours = String(deadline_date.getHours()).padStart(2, '0');
     const minutes = String(deadline_date.getMinutes()).padStart(2, '0');
     const day = String(deadline_date.getDate()).padStart(2, '0');
-    const month = String(deadline_date.getMonth()).padStart(2, '0');
+    const month = String(deadline_date.getMonth() + 1).padStart(2, '0');
 
     return `${hours}:${minutes} - ${day}/${month}/${deadline_date.getFullYear()}`;