diff --git a/src/main/java/de/hitec/nhplus/treatment/LockedTreatmentController.java b/src/main/java/de/hitec/nhplus/treatment/LockedTreatmentController.java
index 1cf0526..1d36d3d 100644
--- a/src/main/java/de/hitec/nhplus/treatment/LockedTreatmentController.java
+++ b/src/main/java/de/hitec/nhplus/treatment/LockedTreatmentController.java
@@ -32,12 +32,6 @@ public class LockedTreatmentController {
     public TableView<Treatment> tableView;
     @FXML
     public TableColumn<Treatment, Long> columnId;
-    @FXML
-    public TableColumn<Treatment, String> columnFirstName;
-    @FXML
-    public TableColumn<Treatment, String> columnSurName;
-    @FXML
-    public TableColumn<Treatment, String> columnDeleteDate;
 
     private final ObservableList<Treatment> treatments = FXCollections.observableArrayList();
     private NurseDao nurseDao;
@@ -52,9 +46,6 @@ public class LockedTreatmentController {
         this.readAllAndShowInTableView();
 
         this.columnId.setCellValueFactory(new PropertyValueFactory<>("id"));
-        this.columnFirstName.setCellValueFactory(new PropertyValueFactory<>("firstName"));
-        this.columnSurName.setCellValueFactory(new PropertyValueFactory<>("surName"));
-        this.columnDeleteDate.setCellValueFactory(cellData -> new SimpleStringProperty("coming soon"));
 
         this.tableView.setItems(this.treatments);
     }
diff --git a/src/main/java/de/hitec/nhplus/treatment/Treatment.java b/src/main/java/de/hitec/nhplus/treatment/Treatment.java
index 7175fd7..949df4f 100644
--- a/src/main/java/de/hitec/nhplus/treatment/Treatment.java
+++ b/src/main/java/de/hitec/nhplus/treatment/Treatment.java
@@ -67,7 +67,7 @@ public class Treatment {
             LocalTime end,
             String description,
             String remarks,
-            boolean isLocked
+            Boolean isLocked
     ) {
         this.id = new SimpleIntegerProperty(id);
         this.patient = new SimpleObjectProperty<>(patient);
diff --git a/src/main/java/de/hitec/nhplus/treatment/database/TreatmentDao.java b/src/main/java/de/hitec/nhplus/treatment/database/TreatmentDao.java
index 24161a8..ce82860 100644
--- a/src/main/java/de/hitec/nhplus/treatment/database/TreatmentDao.java
+++ b/src/main/java/de/hitec/nhplus/treatment/database/TreatmentDao.java
@@ -147,7 +147,7 @@ public class TreatmentDao extends DaoImp<Treatment> {
     }
 
     public List<Treatment> readAllLocked() throws SQLException {
-        final String SQL = "SELECT * FROM treatment WHERE isLocked=true";
+        final String SQL = "SELECT * FROM treatment WHERE isLocked = true";
         return getListFromResultSet(this.connection.prepareStatement(SQL).executeQuery());
     }