diff --git a/src/Tools/tim_tool/ui/tab/file-tab.slint b/src/Tools/tim_tool/ui/tab/file-tab.slint
index c398e2d6..e5ad28eb 100644
--- a/src/Tools/tim_tool/ui/tab/file-tab.slint
+++ b/src/Tools/tim_tool/ui/tab/file-tab.slint
@@ -44,10 +44,8 @@ component ProjectWidget inherits Rectangle {
                 HorizontalLayout {
                     alignment: start;
                     CheckBox {
-                        text: "Append elements from project to existing elements";
-                        toggled() => {
-                            root.append_project_elements = self.checked;
-                        }
+                        text:       "Append elements from project to existing elements";
+                        checked <=> root.append_project_elements;
                     }
                 }
                 HorizontalLayout {
@@ -83,8 +81,8 @@ component ProjectWidget inherits Rectangle {
                     }
                 }
                 CheckBox {
-                    text:    "Use relative path for files";
-                    checked: root.use_rel_paths;
+                    text:       "Use relative path for files";
+                    checked <=> root.use_rel_paths;
                 }
                 HorizontalLayout {
                     alignment: start;