diff --git a/frontend/src/components/TrainingGroupsTab.vue b/frontend/src/components/TrainingGroupsTab.vue
index 016f788f..efcc547f 100644
--- a/frontend/src/components/TrainingGroupsTab.vue
+++ b/frontend/src/components/TrainingGroupsTab.vue
@@ -227,14 +227,14 @@ export default {
                 const filteredMembers = members.filter(m => m != null);
                 // Sortiere alphabetisch nach Nachname, dann Vorname
                 this.members = filteredMembers.sort((a, b) => {
-                    const lastNameA = (a.lastName || '').toLowerCase();
-                    const lastNameB = (b.lastName || '').toLowerCase();
-                    if (lastNameA !== lastNameB) {
-                        return lastNameA.localeCompare(lastNameB);
-                    }
                     const firstNameA = (a.firstName || '').toLowerCase();
                     const firstNameB = (b.firstName || '').toLowerCase();
-                    return firstNameA.localeCompare(firstNameB);
+                    if (firstNameA !== firstNameB) {
+                        return firstNameA.localeCompare(firstNameB);
+                    }
+                    const lastNameA = (a.lastName || '').toLowerCase();
+                    const lastNameB = (b.lastName || '').toLowerCase();
+                    return lastNameA.localeCompare(lastNameB);
                 });
                 console.log('[loadMembers] Loaded', this.members.length, 'active members');
             } catch (error) {