diff --git a/index.html b/index.html
index ccdbf6a..9cfc01a 100644
--- a/index.html
+++ b/index.html
@@ -109,12 +109,16 @@
 					if (!this._canvas)
 						return;
 
-					let radius = Math.min(this.options.iconSize[0], this.options.iconSize[1]);
 					let ctx = this._canvas.getContext('2d');
-					ctx.beginPath();
-					ctx.arc(this.options.iconSize[0], this.options.iconSize[1], radius, 0, 2 * Math.PI);
-					ctx.fillStyle = state ? '#ff0' : '#000';
-					ctx.fill();
+					ctx.clearRect(0, 0, this.options.iconSize[0] * 2, this.options.iconSize[1] * 2);
+
+					if (state) {
+						let radius = Math.min(this.options.iconSize[0], this.options.iconSize[1]);
+						ctx.beginPath();
+						ctx.arc(this.options.iconSize[0], this.options.iconSize[1], radius, 0, 2 * Math.PI);
+						ctx.fillStyle = '#ff0';
+						ctx.fill();
+					}
 
 					this._state = state;
 				}