diff --git a/nac3standalone/demo/mandelbrot.py b/nac3standalone/demo/mandelbrot.py
index bb133b7d..dc64d221 100644
--- a/nac3standalone/demo/mandelbrot.py
+++ b/nac3standalone/demo/mandelbrot.py
@@ -6,18 +6,18 @@ def output_asciiart(x: int32):
 def run() -> int32:
     minX = -2.0
     maxX = 1.0
-    width = 78.0
-    height = 36.0
+    width = 78
+    height = 36
     aspectRatio = 2.0
 
-    yScale = (maxX-minX)*(height/width)*aspectRatio
+    yScale = (maxX-minX)*(float(height)/float(width))*aspectRatio
 
-    y = 0.0
+    y = 0
     while y < height:
-        x = 0.0
+        x = 0
         while x < width:
-            c_r = minX+x*(maxX-minX)/width
-            c_i = y*yScale/height-yScale/2.0
+            c_r = minX+float(x)*(maxX-minX)/float(width)
+            c_i = float(y)*yScale/float(height)-yScale/2.0
             z_r = c_r
             z_i = c_i
             i = 0
@@ -29,7 +29,7 @@ def run() -> int32:
                 z_r = new_z_r
                 i = i + 1
             output_asciiart(i)
-            x = x + 1.0
+            x = x + 1
         output_asciiart(-1)
-        y = y + 1.0
+        y = y + 1
     return 0