diff --git a/rest_framework_jwt/locale/en_US/LC_MESSAGES/django.po b/rest_framework_jwt/locale/en_US/LC_MESSAGES/django.po
index aa26c0c3..006937a2 100644
--- a/rest_framework_jwt/locale/en_US/LC_MESSAGES/django.po
+++ b/rest_framework_jwt/locale/en_US/LC_MESSAGES/django.po
@@ -47,7 +47,7 @@ msgid "User account is disabled."
 msgstr ""
 
 #: serializers.py:76
-msgid "Unable to login with provided credentials."
+msgid "Unable to log in with provided credentials."
 msgstr ""
 
 #: serializers.py:79
diff --git a/rest_framework_jwt/serializers.py b/rest_framework_jwt/serializers.py
index 2674fcab..12b10a44 100644
--- a/rest_framework_jwt/serializers.py
+++ b/rest_framework_jwt/serializers.py
@@ -61,7 +61,7 @@ def validate(self, attrs):
                     'user': user
                 }
             else:
-                msg = _('Unable to login with provided credentials.')
+                msg = _('Unable to log in with provided credentials.')
                 raise serializers.ValidationError(msg)
         else:
             msg = _('Must include "{username_field}" and "password".')
diff --git a/tests/test_serializers.py b/tests/test_serializers.py
index f5231bee..2e6c7e53 100644
--- a/tests/test_serializers.py
+++ b/tests/test_serializers.py
@@ -64,7 +64,7 @@ def test_invalid_credentials(self):
         is_valid = serializer.is_valid()
 
         expected_error = {
-            'non_field_errors': ['Unable to login with provided credentials.']
+            'non_field_errors': ['Unable to log in with provided credentials.']
         }
 
         self.assertFalse(is_valid)