diff --git a/Logo_maride.scad b/Logo_maride.scad
index 63f8e2e..26d4f9f 100644
--- a/Logo_maride.scad
+++ b/Logo_maride.scad
@@ -1,12 +1,16 @@
 LETTER_WIDTH=10;
 LETTER_HEIGHT=30;
 
+LETTER_HEIGHT_13=LETTER_HEIGHT/3;
+LETTER_HEIGHT_23=LETTER_HEIGHT*2/3;
+LETTER_HEIGHT_12=LETTER_HEIGHT/2;
+
 // m
-polygon(points=[[0,LETTER_HEIGHT*2/3], [0, LETTER_HEIGHT/3], [LETTER_WIDTH, LETTER_HEIGHT*2/3], [LETTER_WIDTH, LETTER_HEIGHT]]);
+polygon(points=[[0,LETTER_HEIGHT_23], [0, LETTER_HEIGHT_13], [LETTER_WIDTH, LETTER_HEIGHT_23], [LETTER_WIDTH, LETTER_HEIGHT]]);
 translate([LETTER_WIDTH*2, 0])
-polygon(points=[[0,LETTER_HEIGHT*2/3], [0, LETTER_HEIGHT/3], [LETTER_WIDTH/2, LETTER_HEIGHT*2/3], [LETTER_WIDTH/2, LETTER_HEIGHT]]);
+polygon(points=[[0,LETTER_HEIGHT_23], [0, LETTER_HEIGHT/3], [LETTER_WIDTH/2, LETTER_HEIGHT_23], [LETTER_WIDTH/2, LETTER_HEIGHT]]);
 translate([LETTER_WIDTH*3.5, 0])
-polygon(points=[[0,LETTER_HEIGHT*2/3], [0, LETTER_HEIGHT/3], [LETTER_WIDTH/2, LETTER_HEIGHT*2/3], [LETTER_WIDTH/2, LETTER_HEIGHT]]);
+polygon(points=[[0,LETTER_HEIGHT_23], [0, LETTER_HEIGHT/3], [LETTER_WIDTH/2, LETTER_HEIGHT_23], [LETTER_WIDTH/2, LETTER_HEIGHT]]);
 
 translate([LETTER_WIDTH, 0])
 square([LETTER_WIDTH, LETTER_HEIGHT]);