diff --git a/crc16.py b/crc16.py
deleted file mode 100644
index 0a44f74..0000000
--- a/crc16.py
+++ /dev/null
@@ -1,85 +0,0 @@
-from poly import Polynomial
-import sys
-import ast
-
-Polynomial.n = 2
-
-def normalize_byte(data):
-    while len(data) != 8:
-        if len(data) < 8:
-            data = str(0) + data
-        else:
-            data = data[1:]
-    return data
-
-
-def encode(in_data):
-    data = in_data
-    data = list(data)
-    data_binary = [bin(ord(char)).replace('b', '') for char in data]
-    data_binary = [normalize_byte(byte) for byte in data_binary]
-    data_binary = [int(bit) for bit in list(''.join(data_binary))]
-    data_binary.reverse()
-
-    M = [0] * 16 + data_binary
-    L = [0] * (len(data_binary)) + [1] * 16
-    G = [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1]
-    result_poly = Polynomial.divide(Polynomial.add(Polynomial(M), Polynomial(L)), Polynomial(G))
-    result = result_poly.coefficients + [0] * (16 - len(result_poly.coefficients))
-
-    result.reverse()
-    data_binary.reverse()
-    data_binary = data_binary + result
-    data_binary = [data_binary[i:i+8] for i in range(0, len(data_binary), 8)]
-    data_binary = [int(''.join(map(str, byte)), 2) for byte in data_binary]
-
-    fcs = [hex(byte) for byte in data_binary]
-    fcs = fcs[-2:]
-
-    data = [chr(byte) for byte in data_binary]
-    data = ''.join(data[0:-2])
-
-    return data, fcs
-
-
-def check_fcs(in_data, fcs):
-    data = in_data
-    data = list(data)
-    data_binary = [bin(ord(char)).replace('b', '') for char in data]
-    data_binary = [normalize_byte(byte) for byte in data_binary]
-    data_binary = [int(bit) for bit in list(''.join(data_binary))]
-    fcs_binary = [bin(int(in_hex, 16)).replace('b', '') for in_hex in fcs]
-    fcs_binary = [normalize_byte(byte) for byte in fcs_binary]
-    fcs_binary = [int(bit) for bit in list(''.join(fcs_binary))]
-    data_binary += fcs_binary
-    data_binary.reverse()
-
-    C = [0] * 16 + data_binary
-    L = [0] * len(data_binary) + [1] * 16
-    G = [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1]
-    S = Polynomial.divide(Polynomial.add(Polynomial(C), Polynomial(L)), Polynomial(G))
-
-    if S.coefficients == []:
-        return True
-
-    return False
-
-
-def main():
-    try:
-        if sys.argv[1] == '-e' or sys.argv[1] == '-encode':
-            arg, fcs = encode(sys.argv[2])
-            print(arg, fcs)
-            print(check_fcs(arg, fcs)) # powinno zawsze zwracać true
-        elif sys.argv[1] == '-c' or sys.argv[1] == '-check':
-            arg = sys.argv[2]
-            fcs = ast.literal_eval(sys.argv[3])
-            print(check_fcs(arg, fcs))
-        else:
-            raise IndexError
-    except IndexError:
-        print("To encode: python3 CRC16.py -e [argument]\nTo check result: python3 CRC16.py -c [argument] [fcs]")
-
-
-if __name__ == "__main__":
-    main()
\ No newline at end of file