diff --git a/CHANGES b/CHANGES
index ff13c4355..486a32b3f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,6 +4,9 @@
 
  Changes between 0.9.6h and 0.9.7  [XX xxx 2002]
 
+  *) The "block size" for block ciphers in CFB and OFB mode should be 1.
+     [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
+
   *) Make sure tests can be performed even if the corresponding algorithms
      have been removed entirely.  This was also the last step to make
      OpenSSL compilable with DJGPP under all reasonable conditions.
diff --git a/crypto/evp/evp_locl.h b/crypto/evp/evp_locl.h
index 7b088b484..4d81a3bf4 100644
--- a/crypto/evp/evp_locl.h
+++ b/crypto/evp/evp_locl.h
@@ -124,17 +124,17 @@ const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
 		  iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 
-#define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, block_size, key_len, \
+#define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
 			     iv_len, cbits, flags, init_key, cleanup, \
 			     set_asn1, get_asn1, ctrl) \
-BLOCK_CIPHER_def1(cname, cfb##cbits, cfb, CFB, kstruct, nid, block_size, \
+BLOCK_CIPHER_def1(cname, cfb##cbits, cfb, CFB, kstruct, nid, 1, \
 		  key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 		  get_asn1, ctrl)
 
-#define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, block_size, key_len, \
+#define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
 			     iv_len, cbits, flags, init_key, cleanup, \
 			     set_asn1, get_asn1, ctrl) \
-BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, block_size, \
+BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
 		  key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 		  get_asn1, ctrl)
 
@@ -149,9 +149,9 @@ BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
 			  init_key, cleanup, set_asn1, get_asn1, ctrl) \
 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 		     init_key, cleanup, set_asn1, get_asn1, ctrl) \
-BLOCK_CIPHER_def_cfb(cname, kstruct, nid, block_size, key_len, iv_len, cbits, \
+BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
 		     flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
-BLOCK_CIPHER_def_ofb(cname, kstruct, nid, block_size, key_len, iv_len, cbits, \
+BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
 		     flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 		     init_key, cleanup, set_asn1, get_asn1, ctrl)