diff --git a/README.md b/README.md
index ae10169..60c8c9b 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ An example of how you can make explosions in pygame zero.
 
 <u>**How to run:**</u>
 
-To run the example you need PyGame Zero. You can install it by running this command:
+To run the example you need PyGame Zero. You can install it by runnig this command:
 >$ pip3 install pgzero
 
 And to run the example run this command in the main folder:
diff --git a/Tools/macs.py b/Tools/macs.py
deleted file mode 100644
index 5bf3523..0000000
--- a/Tools/macs.py
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/bin/python3
-
-
-# input string, i.e. "xx:xx:xx:xx:xx:xx,xx:xx:xx:xx:xx:xx"
-macs_raw = "00:04:A5:A3:3B:B0,00:27:22:56:60:8D,00:27:22:56:68:DA,00:27:22:56:69:EC,00:27:22:56:6F:6B,00:27:22:56:6F:6B"
-
-# split the input string of mac address with a ","
-macs = macs_raw.split(",")
-
-def list_duplicates(seq):
-  seen = set()
-  seen_add = seen.add
-  # adds all elements it doesn't know yet to seen and all other to seen_twice
-  seen_twice = set( x for x in seq if x in seen or seen_add(x) )
-  # turn the set into a list (as requested)
-  return list( seen_twice )
-
-# get the duplicates for the list_duplicates() function
-dups = list_duplicates(macs)
-
-# Print number of duplicates
-print("Found %s duplicate(s)." % (len(dups)))
-
-# print a list of all duplicates
-for i in dups:
-    print(i)
-