diff --git a/frontend/src/API/API.ts b/frontend/src/API/API.ts
index c4cf445..b3c6eae 100644
--- a/frontend/src/API/API.ts
+++ b/frontend/src/API/API.ts
@@ -538,7 +538,7 @@ export const api: API = {
   ): Promise<APIResponse<WeeklyReport>> {
     try {
       const response = await fetch(
-        `/api/getWeeklyReport?projectName=${projectName}&week=${week}&targetUser=${targetUser}`,
+        `/api/getWeeklyReport?projectName=${projectName}&week=${week}&targetUser=${targetUser ?? ""}`,
         {
           method: "GET",
           headers: {
@@ -566,7 +566,7 @@ export const api: API = {
   ): Promise<APIResponse<WeeklyReport[]>> {
     try {
       const response = await fetch(
-        `/api/getAllWeeklyReports/${projectName}?targetUser=${targetUser}`,
+        `/api/getAllWeeklyReports/${projectName}?targetUser=${targetUser ?? ""}`,
         {
           method: "GET",
           headers: {