diff --git a/templates/index.html b/templates/index.html
index 096bec3..bfefc02 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -853,7 +853,7 @@ footer br + a {
                                 </select>
                             </label>
                         </fieldset>
-                        <button name="action" value="tage_werktage" type="submit">Berechnen</button>
+                        <button name="action" value="tage_werktage" type="submit">{{ _('Berechnen') }}</button>
                     </form>
                     {% if tage is not none %}
                         <div class="result" aria-live="polite">