diff --git a/frontend/src/controllers/assignments.ts b/frontend/src/controllers/assignments.ts
index c9714177..41ceba9a 100644
--- a/frontend/src/controllers/assignments.ts
+++ b/frontend/src/controllers/assignments.ts
@@ -10,31 +10,31 @@ export class AssignmentController extends BaseController {
         super(`class/${classid}/assignments`);
     }
 
-    getAll(full = true) {
+    async getAll(full = true) {
         return this.get<{ assignments: any[] }>(`/`, { full });
     }
 
-    getByNumber(num: number) {
+    async getByNumber(num: number) {
         return this.get<{ assignment: any }>(`/${num}`);
     }
 
-    createAssignment(data: any) {
+    async createAssignment(data: any) {
         return this.post<{ assignment: any }>(`/`, data);
     }
 
-    deleteAssignment(num: number) {
+    async deleteAssignment(num: number) {
         return this.delete<{ assignment: any }>(`/${num}`);
     }
 
-    getSubmissions(assignmentNumber: number, full = true) {
+    async getSubmissions(assignmentNumber: number, full = true) {
         return this.get<{ submissions: any[] }>(`/${assignmentNumber}/submissions`, { full });
     }
 
-    getQuestions(assignmentNumber: number, full = true) {
+    async getQuestions(assignmentNumber: number, full = true) {
         return this.get<{ questions: any[] }>(`/${assignmentNumber}/questions`, { full });
     }
 
-    getGroups(assignmentNumber: number, full = true) {
+    async getGroups(assignmentNumber: number, full = true) {
         return this.get<{ groups: any[] }>(`/${assignmentNumber}/groups`, { full });
     }
 }
\ No newline at end of file
diff --git a/frontend/src/controllers/classes.ts b/frontend/src/controllers/classes.ts
index e8421672..773cab73 100644
--- a/frontend/src/controllers/classes.ts
+++ b/frontend/src/controllers/classes.ts
@@ -10,31 +10,31 @@ export class ClassController extends BaseController {
         super("class");
     }
 
-    getAll(full = true) {
+    async getAll(full = true) {
         return this.get<{ classes: any[] }>(`/`, { full });
     }
 
-    getById(id: string) {
+    async getById(id: string) {
         return this.get<{ class: any }>(`/${id}`);
     }
 
-    createClass(data: any) {
+    async createClass(data: any) {
         return this.post<{ class: any }>(`/`, data);
     }
 
-    deleteClass(id: string) {
+    async deleteClass(id: string) {
         return this.delete<{ class: any }>(`/${id}`);
     }
 
-    getStudents(id: string, full = true) {
+    async getStudents(id: string, full = true) {
         return this.get<{ students: any[] }>(`/${id}/students`, { full });
     }
 
-    getTeacherInvitations(id: string, full = true) {
+    async getTeacherInvitations(id: string, full = true) {
         return this.get<{ invitations: any[] }>(`/${id}/teacher-invitations`, { full });
     }
 
-    getAssignments(id: string, full = true) {
+    async getAssignments(id: string, full = true) {
         return this.get<{ assignments: any[] }>(`/${id}/assignments`, { full });
     }
 }
\ No newline at end of file
diff --git a/frontend/src/controllers/groups.ts b/frontend/src/controllers/groups.ts
index c6db4a9e..806dac4a 100644
--- a/frontend/src/controllers/groups.ts
+++ b/frontend/src/controllers/groups.ts
@@ -10,27 +10,27 @@ export class GroupController extends BaseController {
         super(`class/${classid}/assignments/${assignmentNumber}/groups`);
     }
 
-    getAll(full = true) {
+    async getAll(full = true) {
         return this.get<{ groups: any[] }>(`/`, { full });
     }
 
-    getByNumber(num: number) {
+    async getByNumber(num: number) {
         return this.get<{ group: any }>(`/${num}`);
     }
 
-    createGroup(data: any) {
+    async createGroup(data: any) {
         return this.post<{ group: any }>(`/`, data);
     }
 
-    deleteClass(num: number) {
+    async deleteClass(num: number) {
         return this.delete<{ group: any }>(`/${num}`);
     }
 
-    getSubmissions(groupNumber: number, full = true) {
+    async getSubmissions(groupNumber: number, full = true) {
         return this.get<{ groups: any[] }>(`/${groupNumber}/submissions`, { full });
     }
 
-    getQuestions(groupNumber: number, full = true) {
+    async getQuestions(groupNumber: number, full = true) {
         return this.get<{ questions: any[] }>(`/${groupNumber}/questions`, { full });
     }
 }
diff --git a/frontend/src/controllers/submission.ts b/frontend/src/controllers/submission.ts
index 31ad6606..46b925c8 100644
--- a/frontend/src/controllers/submission.ts
+++ b/frontend/src/controllers/submission.ts
@@ -5,19 +5,19 @@ export class SubmissionController extends BaseController {
         super(`class/${classid}/assignments/${assignmentNumber}/groups/${groupNumber}`);
     }
 
-    getAll(full = true) {
+    async getAll(full = true) {
         return this.get<any>(`/`, { full });
     }
 
-    getByNumber(submissionNumber: number) {
+    async getByNumber(submissionNumber: number) {
         return this.get<any>(`/${submissionNumber}`);
     }
 
-    createSubmission(data: any) {
+    async createSubmission(data: any) {
         return this.post<any>(`/`, data);
     }
 
-    deleteSubmission(submissionNumber: number) {
+    async deleteSubmission(submissionNumber: number) {
         return this.delete<any>(`/${submissionNumber}`);
     }
 }