diff --git a/polargraphcontroller.pde b/polargraphcontroller.pde
index 8981fb3..9990cc5 100644
--- a/polargraphcontroller.pde
+++ b/polargraphcontroller.pde
@@ -1202,7 +1202,7 @@ float getGridSize()
 void setGridSize(float s)
 {
   // round it down
-  this.gridSize = s;//(int)s;
+  this.gridSize = (int)s;
 }
 
 void setSampleArea(float v)