diff --git a/sanic/exceptions.py b/sanic/exceptions.py
index e2d808f7..aa1e0d4d 100644
--- a/sanic/exceptions.py
+++ b/sanic/exceptions.py
@@ -1,4 +1,4 @@
-from sanic.response import ALL_STATUS_CODES, COMMON_STATUS_CODES
+from sanic.response import STATUS_CODES
 
 TRACEBACK_STYLE = '''
     <style>
@@ -275,8 +275,7 @@ def abort(status_code, message=None):
                     in response.py for the given status code.
     """
     if message is None:
-        message = COMMON_STATUS_CODES.get(status_code,
-                                          ALL_STATUS_CODES.get(status_code))
+        message = STATUS_CODES.get(status_code)
         # These are stored as bytes in the STATUS_CODES dict
         message = message.decode('utf8')
     sanic_exception = _sanic_exceptions.get(status_code, SanicException)
diff --git a/sanic/response.py b/sanic/response.py
index 582e11cf..86f50038 100644
--- a/sanic/response.py
+++ b/sanic/response.py
@@ -10,13 +10,7 @@ from aiofiles import open as open_async
 
 from sanic.cookies import CookieJar
 
-COMMON_STATUS_CODES = {
-    200: b'OK',
-    400: b'Bad Request',
-    404: b'Not Found',
-    500: b'Internal Server Error',
-}
-ALL_STATUS_CODES = {
+STATUS_CODES = {
     100: b'Continue',
     101: b'Switching Protocols',
     102: b'Processing',
@@ -162,11 +156,10 @@ class StreamingHTTPResponse(BaseHTTPResponse):
 
         headers = self._parse_headers()
 
-        # Try to pull from the common codes first
-        # Speeds up response rate 6% over pulling from all
-        status = COMMON_STATUS_CODES.get(self.status)
-        if not status:
-            status = ALL_STATUS_CODES.get(self.status)
+        if self.status is 200:
+            status = b'OK'
+        else:
+            status = STATUS_CODES.get(self.status)
 
         return (b'HTTP/%b %d %b\r\n'
                 b'%b'
@@ -209,11 +202,10 @@ class HTTPResponse(BaseHTTPResponse):
 
         headers = self._parse_headers()
 
-        # Try to pull from the common codes first
-        # Speeds up response rate 6% over pulling from all
-        status = COMMON_STATUS_CODES.get(self.status)
-        if not status:
-            status = ALL_STATUS_CODES.get(self.status, b'UNKNOWN RESPONSE')
+        if self.status is 200:
+            status = b'OK'
+        else:
+            status = STATUS_CODES.get(self.status, b'UNKNOWN RESPONSE')
 
         return (b'HTTP/%b %d %b\r\n'
                 b'Connection: %b\r\n'