diff --git a/rest_framework/fields.py b/rest_framework/fields.py
index 14b264ff9..cb1d40369 100644
--- a/rest_framework/fields.py
+++ b/rest_framework/fields.py
@@ -577,6 +577,8 @@ class Field(object):
         """
         A helper method that simply raises a validation error.
         """
+        if 'GLOBAL_ERROR_MESSAGES' in api_settings.user_settings.keys():
+            self.error_messages.update(api_settings.user_settings['GLOBAL_ERROR_MESSAGES'])
         try:
             msg = self.error_messages[key]
         except KeyError: