diff --git a/src/sys/graphics/objgfx30.cpp b/src/sys/graphics/objgfx30.cpp
index a50d3ab..18dc628 100755
--- a/src/sys/graphics/objgfx30.cpp
+++ b/src/sys/graphics/objgfx30.cpp
@@ -5,7 +5,7 @@
 #include "objgfx30.h"
 #include <stdlib.h>
 #include <string.h>
-#include <math.h>
+//#include <math.h>
 #include <ubixos/types.h>
 // TGfx0 constructor
 
@@ -96,7 +96,7 @@
   p = 3-2*radius;
   
   while (x<=y) {
-    alpha = RadToDeg(atan(x/y));
+ // mjikaboom   alpha = RadToDeg(atan(x/y));
     if ((alpha>=s_angle) && (alpha<=e_angle))
       putPixel(x_center-x, y_center-y, colour);
     if ((90-alpha>=s_angle) && (90-alpha<=e_angle))