diff --git a/lms/djangoapps/courseware/module_render.py b/lms/djangoapps/courseware/module_render.py
index 0a074b2313..7bc1e1eb33 100644
--- a/lms/djangoapps/courseware/module_render.py
+++ b/lms/djangoapps/courseware/module_render.py
@@ -64,7 +64,6 @@ XQUEUE_INTERFACE = XQueueInterface(
 # Some brave person should make the variable names consistently someday, but the code's
 # coupled enough that it's kind of tricky--you've been warned!
 
-
 class LmsModuleRenderError(Exception):
     """
     An exception class for exceptions thrown by module_render that don't fit well elsewhere
diff --git a/lms/startup.py b/lms/startup.py
index ea4d27b167..59de997329 100644
--- a/lms/startup.py
+++ b/lms/startup.py
@@ -20,6 +20,8 @@ def run():
     """
     autostartup()
 
+    add_mimetypes()
+
     if settings.FEATURES.get('USE_CUSTOM_THEME', False):
         enable_theme()
 
@@ -30,6 +32,18 @@ def run():
         enable_third_party_auth()
 
 
+def add_mimetypes():
+    """
+    Add extra mimetypes. Used in xblock_resource.
+    """
+    import mimetypes
+
+    mimetypes.add_type('application/vnd.ms-fontobject', '.eot')
+    mimetypes.add_type('application/x-font-opentype', '.otf')
+    mimetypes.add_type('application/x-font-ttf', '.ttf')
+    mimetypes.add_type('application/font-woff', '.woff')
+
+
 def enable_theme():
     """
     Enable the settings for a custom theme, whose files should be stored
diff --git a/lms/tests.py b/lms/tests.py
index a164dd654e..c6c7be64e9 100644
--- a/lms/tests.py
+++ b/lms/tests.py
@@ -1,10 +1,25 @@
 """Tests for the lms module itself."""
 
+import mimetypes
+
 from django.test import TestCase
 
 from edxmako import add_lookup, LOOKUP
 from lms import startup
 
+
+class LmsModuleTests(TestCase):
+    """
+    Tests for lms module itself.
+    """
+
+    def test_new_mimetypes(self):
+        extensions = ['eot', 'otf', 'ttf', 'woff']
+        for extension in extensions:
+            mimetype, _ = mimetypes.guess_type('test.' + extension)
+            self.assertIsNotNone(mimetype)
+
+
 class TemplateLookupTests(TestCase):
     """
     Tests for TemplateLookup.