diff --git a/src/utils/groups.be.ts b/src/utils/groups.be.ts
index 699f11d6..42fe68f9 100644
--- a/src/utils/groups.be.ts
+++ b/src/utils/groups.be.ts
@@ -64,7 +64,10 @@ export const getUserNamedGroup = async (id: string, name: string) => {
 };
 
 export const getUsersGroups = async (ids: string[]) => {
-	return await db.collection("groups").find<Group>({admin: ids}).toArray();
+	return await db
+		.collection("groups")
+		.find<Group>({admin: {$in: ids}})
+		.toArray();
 };
 
 export const getAllAssignersByCorporate = async (corporateID: string): Promise<string[]> => {
diff --git a/src/utils/users.be.ts b/src/utils/users.be.ts
index a04bfd20..cd5c1c1a 100644
--- a/src/utils/users.be.ts
+++ b/src/utils/users.be.ts
@@ -56,7 +56,7 @@ export async function getLinkedUsers(
 
 	const participants = uniq([
 		...adminGroups.flatMap((x) => x.participants),
-		...groups.flat().flatMap((x) => x.participants),
+		...(userType === "mastercorporate" ? groups.flat().flatMap((x) => x.participants) : []),
 		...(userType === "teacher" ? belongingGroups.flatMap((x) => x.participants) : []),
 	]);