diff --git a/cryptography/hazmat/bindings/openssl/backend.py b/cryptography/hazmat/bindings/openssl/backend.py
index 89ee2b5..71b94ab 100644
--- a/cryptography/hazmat/bindings/openssl/backend.py
+++ b/cryptography/hazmat/bindings/openssl/backend.py
@@ -206,7 +206,6 @@
 
 class Ciphers(object):
     def __init__(self, backend):
-        super(Ciphers, self).__init__()
         self._backend = backend
         self._cipher_registry = {}
         self._register_default_ciphers()
@@ -313,7 +312,6 @@
 
 class Hashes(object):
     def __init__(self, backend):
-        super(Hashes, self).__init__()
         self._backend = backend
 
     def supported(self, algorithm):
@@ -328,7 +326,6 @@
 
 class HMACs(object):
     def __init__(self, backend):
-        super(HMACs, self).__init__()
         self._backend = backend
 
     def create_ctx(self, key, hash_cls):
diff --git a/cryptography/hazmat/primitives/ciphers/algorithms.py b/cryptography/hazmat/primitives/ciphers/algorithms.py
index 61e93b0..c135f56 100644
--- a/cryptography/hazmat/primitives/ciphers/algorithms.py
+++ b/cryptography/hazmat/primitives/ciphers/algorithms.py
@@ -20,7 +20,6 @@
     key_sizes = frozenset([128, 192, 256])
 
     def __init__(self, key):
-        super(AES, self).__init__()
         self.key = key
 
         # Verify that the key size matches the expected key size
@@ -40,7 +39,6 @@
     key_sizes = frozenset([128, 192, 256])
 
     def __init__(self, key):
-        super(Camellia, self).__init__()
         self.key = key
 
         # Verify that the key size matches the expected key size
@@ -60,7 +58,6 @@
     key_sizes = frozenset([64, 128, 192])
 
     def __init__(self, key):
-        super(TripleDES, self).__init__()
         if len(key) == 8:
             key += key + key
         elif len(key) == 16:
@@ -84,7 +81,6 @@
     key_sizes = frozenset(range(32, 449, 8))
 
     def __init__(self, key):
-        super(Blowfish, self).__init__()
         self.key = key
 
         # Verify that the key size matches the expected key size
@@ -104,7 +100,6 @@
     key_sizes = frozenset([40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120, 128])
 
     def __init__(self, key):
-        super(CAST5, self).__init__()
         self.key = key
 
         # Verify that the key size matches the expected key size
@@ -124,7 +119,6 @@
     key_sizes = frozenset([40, 56, 64, 80, 128, 192, 256])
 
     def __init__(self, key):
-        super(ARC4, self).__init__()
         self.key = key
 
         # Verify that the key size matches the expected key size
diff --git a/cryptography/hazmat/primitives/ciphers/base.py b/cryptography/hazmat/primitives/ciphers/base.py
index 1599308..d48f9cc 100644
--- a/cryptography/hazmat/primitives/ciphers/base.py
+++ b/cryptography/hazmat/primitives/ciphers/base.py
@@ -18,8 +18,6 @@
 
 class Cipher(object):
     def __init__(self, algorithm, mode, backend=None):
-        super(Cipher, self).__init__()
-
         if backend is None:
             from cryptography.hazmat.bindings import (
                 _default_backend as backend,
diff --git a/cryptography/hazmat/primitives/ciphers/modes.py b/cryptography/hazmat/primitives/ciphers/modes.py
index e54872a..915fd83 100644
--- a/cryptography/hazmat/primitives/ciphers/modes.py
+++ b/cryptography/hazmat/primitives/ciphers/modes.py
@@ -22,7 +22,6 @@
     name = "CBC"
 
     def __init__(self, initialization_vector):
-        super(CBC, self).__init__()
         self.initialization_vector = initialization_vector
 
 
@@ -37,7 +36,6 @@
     name = "OFB"
 
     def __init__(self, initialization_vector):
-        super(OFB, self).__init__()
         self.initialization_vector = initialization_vector
 
 
@@ -47,7 +45,6 @@
     name = "CFB"
 
     def __init__(self, initialization_vector):
-        super(CFB, self).__init__()
         self.initialization_vector = initialization_vector
 
 
@@ -57,5 +54,4 @@
     name = "CTR"
 
     def __init__(self, nonce):
-        super(CTR, self).__init__()
         self.nonce = nonce
diff --git a/cryptography/hazmat/primitives/hashes.py b/cryptography/hazmat/primitives/hashes.py
index c14d043..6ae622c 100644
--- a/cryptography/hazmat/primitives/hashes.py
+++ b/cryptography/hazmat/primitives/hashes.py
@@ -42,8 +42,9 @@
         self._ctx.update(data)
 
     def copy(self):
-        return self.__class__(self.algorithm, backend=self._backend,
-                              ctx=self._ctx.copy())
+        return Hash(
+            self.algorithm, backend=self._backend, ctx=self._ctx.copy()
+        )
 
     def finalize(self):
         return self._ctx.finalize()
diff --git a/cryptography/hazmat/primitives/hmac.py b/cryptography/hazmat/primitives/hmac.py
index 1457ed7..ed2dd54 100644
--- a/cryptography/hazmat/primitives/hmac.py
+++ b/cryptography/hazmat/primitives/hmac.py
@@ -21,7 +21,6 @@
 @interfaces.register(interfaces.HashContext)
 class HMAC(object):
     def __init__(self, key, algorithm, ctx=None, backend=None):
-        super(HMAC, self).__init__()
         if not isinstance(algorithm, interfaces.HashAlgorithm):
             raise TypeError("Expected instance of interfaces.HashAlgorithm.")
         self.algorithm = algorithm
@@ -43,8 +42,12 @@
         self._backend.hmacs.update_ctx(self._ctx, msg)
 
     def copy(self):
-        return self.__class__(self._key, self.algorithm, backend=self._backend,
-                              ctx=self._backend.hmacs.copy_ctx(self._ctx))
+        return HMAC(
+            self._key,
+            self.algorithm,
+            backend=self._backend,
+            ctx=self._backend.hmacs.copy_ctx(self._ctx)
+        )
 
     def finalize(self):
         return self._backend.hmacs.finalize_ctx(self._ctx,
diff --git a/cryptography/hazmat/primitives/padding.py b/cryptography/hazmat/primitives/padding.py
index eac18c2..f41c62c 100644
--- a/cryptography/hazmat/primitives/padding.py
+++ b/cryptography/hazmat/primitives/padding.py
@@ -18,7 +18,6 @@
 
 class PKCS7(object):
     def __init__(self, block_size):
-        super(PKCS7, self).__init__()
         if not (0 <= block_size < 256):
             raise ValueError("block_size must be in range(0, 256)")
 
@@ -37,7 +36,6 @@
 @interfaces.register(interfaces.PaddingContext)
 class _PKCS7PaddingContext(object):
     def __init__(self, block_size):
-        super(_PKCS7PaddingContext, self).__init__()
         self.block_size = block_size
         # TODO: O(n ** 2) complexity for repeated concatentation, we should use
         # zero-buffer (#193)
@@ -72,7 +70,6 @@
 @interfaces.register(interfaces.PaddingContext)
 class _PKCS7UnpaddingContext(object):
     def __init__(self, block_size):
-        super(_PKCS7UnpaddingContext, self).__init__()
         self.block_size = block_size
         # TODO: O(n ** 2) complexity for repeated concatentation, we should use
         # zero-buffer (#193)