diff --git a/README.md b/README.md
index 0ccea79d..3961abd6 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,11 @@ Among other things, it can take a Gerber file generated by your favorite PCB
 CAD program, and create G-Code for Isolation routing.
 
 
-####### my own shell script
+### my own shell script
+
+```
+#!python
+
 
 new
 set_sys units MM
@@ -100,8 +104,4 @@ write_gcode FCu_join_iso_cnc /path/to/Gerber/output/Loop-FCu.pngc
 write_gcode FCu_margin_iso_exterior_cnc /path/to/Gerber/output/Loop-FCu-Margin.ngc
 write_gcode FCu_drills_0.8 /path/to/Gerber/output/Loop-FCu.drl_0.8.ngc
 write_gcode FCu_drills_3 /path/to/Gerber/output/Loop-FCu.drl_3.ngc
-
-
-
-
-
+```
\ No newline at end of file