diff --git a/voicegardens/static/voicegardens.js b/voicegardens/static/voicegardens.js
index 9f07fd3..6e0810a 100644
--- a/voicegardens/static/voicegardens.js
+++ b/voicegardens/static/voicegardens.js
@@ -174,8 +174,8 @@ class GeneratedShape {
     this.destX = random(canvasWidth);
     this.destY = random(canvasHeight);
 
-    this.centerX = centerX;
-    this.centerY = centerY;
+    this.centerX = random(windowWidth);
+    this.centerY = random(windowHeight);
 
     this.initialise();
   }