diff --git a/ui/canvas.js b/ui/canvas.js
index eec6021..d5ac4b5 100644
--- a/ui/canvas.js
+++ b/ui/canvas.js
@@ -20,7 +20,7 @@ class Canvas extends UI {
         this._ctx.filter = "blur(" + this._blurStrength + "px)";
     }
     getData() {
-        this.element.toDataURL();
+        return this.element.toDataURL();
     }
     draw(shape) {
         this._ctx.fillStyle = shape.color.rgba();