diff --git a/src/saml2/request.py b/src/saml2/request.py
index a08e1c5..7e186c6 100644
--- a/src/saml2/request.py
+++ b/src/saml2/request.py
@@ -1,4 +1,3 @@
-import base64
 import sys
 
 from attribute_converter import to_local
@@ -158,4 +157,4 @@ class AuthnRequest(Request):
 
     def attributes(self):
         return to_local(self.attribute_converters, self.message)
-            
\ No newline at end of file
+