diff --git a/d07/part1.sed b/d07/part1.sed
index e4bea37..de036c1 100755
--- a/d07/part1.sed
+++ b/d07/part1.sed
@@ -28,7 +28,7 @@ s/S/|/; h
         s/aa/2/
         s/a/1/
         : next
-        y/bcdefgh/abcdefg/
+        y/bcd/abc/
         /[a-d]/ b loop
     # on the last line, print out the answer
     $p