diff --git a/ryu/ofproto/ofproto_v1_2.py b/ryu/ofproto/ofproto_v1_2.py
index fd5f1cff..f5f831d2 100644
--- a/ryu/ofproto/ofproto_v1_2.py
+++ b/ryu/ofproto/ofproto_v1_2.py
@@ -738,7 +738,13 @@ OFPQOFC_EPERM = 2           # Permissions error.
 # enum ofp_switch_config_failed_code
 OFPSCFC_BAD_FLAGS = 0       # Specified flags is invalid.
 OFPSCFC_BAD_LEN = 1         # Specified len is invalid.
-OFPQCFC_EPERM = 2           # Permissions error.
+OFPQCFC_EPERM = 2           # Permissions error (depracated).
+                            # New or updated Ryu applications shall use
+                            # OFPSCFC_EPERM. The variable name is a typo of
+                            # in specifications before v1.3.1 (EXT-208).
+OFPSCFC_EPERM = 2           # Permissions error.
+                            # Ported back to ofproto_v1_2 for consistency with
+                            # later OF specs (EXT-208).
 
 # enum ofp_role_request_failed_code
 OFPRRFC_STALE = 0           # Stale Message: old generation_id.
diff --git a/ryu/ofproto/ofproto_v1_3.py b/ryu/ofproto/ofproto_v1_3.py
index d07bad91..b431d083 100644
--- a/ryu/ofproto/ofproto_v1_3.py
+++ b/ryu/ofproto/ofproto_v1_3.py
@@ -1021,7 +1021,11 @@ OFPQOFC_EPERM = 2           # Permissions error.
 # enum ofp_switch_config_failed_code
 OFPSCFC_BAD_FLAGS = 0       # Specified flags is invalid.
 OFPSCFC_BAD_LEN = 1         # Specified len is invalid.
-OFPQCFC_EPERM = 2           # Permissions error.
+OFPQCFC_EPERM = 2           # Permissions error (depracated).
+                            # New or updated Ryu applications shall use
+                            # OFPSCFC_EPERM. The variable name is a typo of
+                            # in specifications before v1.3.1 (EXT-208).
+OFPSCFC_EPERM = 2           # Permissions error.
 
 # enum ofp_role_request_failed_code
 OFPRRFC_STALE = 0           # Stale Message: old generation_id.
diff --git a/ryu/ofproto/ofproto_v1_4.py b/ryu/ofproto/ofproto_v1_4.py
index bb045d8e..6542b6ff 100644
--- a/ryu/ofproto/ofproto_v1_4.py
+++ b/ryu/ofproto/ofproto_v1_4.py
@@ -850,7 +850,7 @@ OFPQOFC_EPERM = 2           # Permissions error.
 # enum ofp_switch_config_failed_code
 OFPSCFC_BAD_FLAGS = 0       # Specified flags is invalid.
 OFPSCFC_BAD_LEN = 1         # Specified len is invalid.
-OFPQCFC_EPERM = 2           # Permissions error.
+OFPSCFC_EPERM = 2           # Permissions error.
 
 # enum ofp_role_request_failed_code
 OFPRRFC_STALE = 0           # Stale Message: old generation_id.
diff --git a/ryu/tests/unit/ofproto/test_ofproto_v12.py b/ryu/tests/unit/ofproto/test_ofproto_v12.py
index d6280a6d..c1228a05 100644
--- a/ryu/tests/unit/ofproto/test_ofproto_v12.py
+++ b/ryu/tests/unit/ofproto/test_ofproto_v12.py
@@ -630,7 +630,7 @@ class TestOfprot12(unittest.TestCase):
     def test_enum_ofp_switch_config_failed_code(self):
         eq_(OFPSCFC_BAD_FLAGS, 0)
         eq_(OFPSCFC_BAD_LEN, 1)
-        eq_(OFPQCFC_EPERM, 2)
+        eq_(OFPSCFC_EPERM, 2)
 
     def test_enum_ofp_role_request_failed_code(self):
         eq_(OFPRRFC_STALE, 0)
diff --git a/ryu/tests/unit/ofproto/test_parser_v12.py b/ryu/tests/unit/ofproto/test_parser_v12.py
index 2560fbab..13caa526 100644
--- a/ryu/tests/unit/ofproto/test_parser_v12.py
+++ b/ryu/tests/unit/ofproto/test_parser_v12.py
@@ -742,7 +742,7 @@ class TestOFPErrorMsg(unittest.TestCase):
 
     def test_parser_p10_2(self):
         type_ = ofproto.OFPET_SWITCH_CONFIG_FAILED
-        code = ofproto.OFPQCFC_EPERM
+        code = ofproto.OFPSCFC_EPERM
         data = 'Error Message.'
         self._test_parser(type_, code, data)
 
@@ -1196,7 +1196,7 @@ class TestOFPErrorMsg(unittest.TestCase):
 
     def test_serialize_p10_2(self):
         self._test_serialize_p(ofproto.OFPET_SWITCH_CONFIG_FAILED,
-                               ofproto.OFPQCFC_EPERM)
+                               ofproto.OFPSCFC_EPERM)
 
     def test_serialize_p11_0(self):
         self._test_serialize_p(ofproto.OFPET_ROLE_REQUEST_FAILED,