diff --git a/Userland/Applications/PixelPaint/EllipseTool.cpp b/Userland/Applications/PixelPaint/EllipseTool.cpp
index 5ace7869b5..4a13efdb0a 100644
--- a/Userland/Applications/PixelPaint/EllipseTool.cpp
+++ b/Userland/Applications/PixelPaint/EllipseTool.cpp
@@ -76,6 +76,7 @@ void EllipseTool::on_mouseup(Layer* layer, MouseEvent& event)
         GUI::Painter painter(layer->bitmap());
         draw_using(painter, m_ellipse_start_position, m_ellipse_end_position, m_thickness);
         m_drawing_button = GUI::MouseButton::None;
+        layer->did_modify_bitmap();
         m_editor->update();
         m_editor->did_complete_action();
     }