diff --git a/backend/grading-service/src/services/get-handler.ts b/backend/grading-service/src/services/get-handler.ts
index a9e9971d..36192268 100644
--- a/backend/grading-service/src/services/get-handler.ts
+++ b/backend/grading-service/src/services/get-handler.ts
@@ -1,6 +1,6 @@
 import NotExistingStudentError from "../libs/errors/NotExistingStudentError";
 import db from "../models/db";
-import { Submission } from "../types/grading-service";
+import { Submission, SubmissionInfo, Submitter } from "../types/grading-service";
 
 const getSubmissionsByQuestionIdAndStudentId = async (
   questionId: string,
@@ -110,12 +110,6 @@ const getLatestSubmissionByQuestionIdAndStudentId = async (
   };
 };
 
-interface Submitter {
-  studentId: number;
-  name: string;
-  createdOn: number;
-}
-
 const getSubmittersByAssignmentId = async (
   assignmentId: string
 ): Promise<Submitter[] | null> => {
@@ -161,11 +155,6 @@ const getSubmittersByAssignmentId = async (
   });
 };
 
-interface SubmissionInfo {
-  questionId: string;
-  createdOn: number;
-}
-
 const getSubmissionInfo = async (
   assignmentId: string,
   studentId: number
diff --git a/backend/grading-service/src/types/grading-service.d.ts b/backend/grading-service/src/types/grading-service.d.ts
index 151b1fab..89ad947e 100644
--- a/backend/grading-service/src/types/grading-service.d.ts
+++ b/backend/grading-service/src/types/grading-service.d.ts
@@ -8,6 +8,17 @@ export interface Submission {
   createdOn: number;
 }
 
+export interface SubmissionInfo {
+  questionId: string;
+  createdOn: number;
+}
+
+export interface Submitter {
+  studentId: number;
+  name: string;
+  createdOn: number;
+}
+
 export interface Feedback {
   line: number;
   hints: string[];