diff --git a/pywii/Common/pywii/ec.py b/pywii/Common/pywii/ec.py
index a0468b8..6cef40a 100644
--- a/pywii/Common/pywii/ec.py
+++ b/pywii/Common/pywii/ec.py
@@ -6,7 +6,10 @@
 
 from array import array
 from struct import pack, unpack
-from Cryptodome.Util.number import bytes_to_long, long_to_bytes
+try:
+    from Cryptodome.Util.number import bytes_to_long, long_to_bytes
+except ImportError:
+    from Crypto.Util.number import bytes_to_long, long_to_bytes
 
 # y**2 + x*y = x**3 + x + b
 ec_b = "\x00\x66\x64\x7e\xde\x6c\x33\x2c\x7f\x8c\x09\x23\xbb\x58\x21"+\
diff --git a/pywii/Common/pywii/wii.py b/pywii/Common/pywii/wii.py
index 1338dff..9484d3a 100644
--- a/pywii/Common/pywii/wii.py
+++ b/pywii/Common/pywii/wii.py
@@ -8,11 +8,18 @@ from struct import unpack, pack
 import os, os.path
 import sys
 
-from Cryptodome.Cipher import AES
-from Cryptodome.Hash import SHA
-from Cryptodome.PublicKey import RSA
-from Cryptodome.Util.number import bytes_to_long, long_to_bytes
-from Cryptodome.Signature import pkcs1_15
+try:
+    from Cryptodome.Cipher import AES
+    from Cryptodome.Hash import SHA
+    from Cryptodome.PublicKey import RSA
+    from Cryptodome.Util.number import bytes_to_long, long_to_bytes
+    from Cryptodome.Signature import pkcs1_15
+except ImportError:
+    from Crypto.Cipher import AES
+    from Crypto.Hash import SHA
+    from Crypto.PublicKey import RSA
+    from Crypto.Util.number import bytes_to_long, long_to_bytes
+    from Crypto.Signature import pkcs1_15
 
 import ec
 
diff --git a/pywii/pywii-tools/tmdupdatecr.py b/pywii/pywii-tools/tmdupdatecr.py
index 0778dc5..55ac566 100755
--- a/pywii/pywii-tools/tmdupdatecr.py
+++ b/pywii/pywii-tools/tmdupdatecr.py
@@ -2,7 +2,10 @@
 
 import sys, os, os.path
 import pywii as wii
-from Cryptodome.Hash import SHA
+try:
+    from Cryptodome.Hash import SHA
+except ImportError:
+    from Crypto.Hash import SHA
 
 wii.loadkeys()