diff --git a/projects_expert.md b/projects_expert.md
index 0e3695f..00620fb 100644
--- a/projects_expert.md
+++ b/projects_expert.md
@@ -23,9 +23,6 @@ BINÆR_DATA = {
     30: "99990:", 31: "99999:"
     }
 
-def binaer(n):
-    return BINÆR_DATA[n]+"00000:00000:00000:00000"
-
 def bin_taeller():
     for b in range(32):
         display.show(Image(binaer(b)))