diff --git a/backend/src/controllers/v1/roleController.ts b/backend/src/controllers/v1/roleController.ts
index 4eb304e6c..e2e4e30e6 100644
--- a/backend/src/controllers/v1/roleController.ts
+++ b/backend/src/controllers/v1/roleController.ts
@@ -193,7 +193,7 @@ export const getUserPermissions = async (req: Request, res: Response) => {
   const {
     params: { orgId }
   } = await validateRequest(GetUserPermission, req);
-  const { permission } = await getUserOrgPermissions(req.user.id, orgId);
+  const { permission } = await getUserOrgPermissions(req.user._id, orgId);
 
   res.status(200).json({
     data: {
@@ -206,7 +206,7 @@ export const getUserWorkspacePermissions = async (req: Request, res: Response) =
   const {
     params: { workspaceId }
   } = await validateRequest(GetUserProjectPermission, req);
-  const { permission } = await getUserProjectPermissions(req.user.id, workspaceId);
+  const { permission } = await getUserProjectPermissions(req.user._id, workspaceId);
 
   res.status(200).json({
     data: {
diff --git a/backend/src/services/ProjectRoleService.ts b/backend/src/services/ProjectRoleService.ts
index 1c16518f7..5a2d24e00 100644
--- a/backend/src/services/ProjectRoleService.ts
+++ b/backend/src/services/ProjectRoleService.ts
@@ -225,7 +225,7 @@ export const getUserProjectPermissions = async (userId: string, workspaceId: str
 
   if (membership.role === "admin") return { permission: adminProjectPermissions, membership };
   if (membership.role === "member") return { permission: memberProjectPermissions, membership };
-  if (membership.role === "viewer") return { permission: memberProjectPermissions, membership };
+  if (membership.role === "viewer") return { permission: viewerProjectPermission, membership };
 
   if (membership.role === "custom") {
     const permission = createMongoAbility<ProjectPermissionSet>(membership.customRole.permissions);
diff --git a/frontend/src/views/Project/MembersPage/components/ProjectRoleListTab/components/ProjectRoleList/ProjectRoleList.tsx b/frontend/src/views/Project/MembersPage/components/ProjectRoleListTab/components/ProjectRoleList/ProjectRoleList.tsx
index c18458127..c8545683d 100644
--- a/frontend/src/views/Project/MembersPage/components/ProjectRoleListTab/components/ProjectRoleList/ProjectRoleList.tsx
+++ b/frontend/src/views/Project/MembersPage/components/ProjectRoleListTab/components/ProjectRoleList/ProjectRoleList.tsx
@@ -102,7 +102,7 @@ export const ProjectRoleList = ({ isRolesLoading, roles = [], onSelectRole }: Pr
               {isRolesLoading && <TableSkeleton columns={4} innerKey="org-roles" />}
               {roles?.map((role) => {
                 const { _id: id, name, createdAt, slug } = role;
-                const isNonMutatable = ["owner", "admin", "member"].includes(slug);
+                const isNonMutatable = ["admin", "member", "viewer"].includes(slug);
 
                 return (
                   <Tr key={`role-list-${id}`}>
diff --git a/frontend/src/views/Project/MembersPage/components/ProjectRoleListTab/components/ProjectRoleModifySection/ProjectRoleModifySection.tsx b/frontend/src/views/Project/MembersPage/components/ProjectRoleListTab/components/ProjectRoleModifySection/ProjectRoleModifySection.tsx
index b5f1d7254..61f056258 100644
--- a/frontend/src/views/Project/MembersPage/components/ProjectRoleListTab/components/ProjectRoleModifySection/ProjectRoleModifySection.tsx
+++ b/frontend/src/views/Project/MembersPage/components/ProjectRoleListTab/components/ProjectRoleModifySection/ProjectRoleModifySection.tsx
@@ -108,7 +108,7 @@ type Props = {
 export const ProjectRoleModifySection = ({ role, onGoBack }: Props) => {
   const [searchPermission, setSearchPermission] = useState("");
 
-  const isNonEditable = ["owner", "admin", "member"].includes(role?.slug || "");
+  const isNonEditable = ["admin", "member", "viewer"].includes(role?.slug || "");
   const isNewRole = !role?.slug;
 
   const { createNotification } = useNotificationContext();