diff --git a/includes/file.mimetypes.inc b/includes/file.mimetypes.inc
index cda03fb..8509433 100644
--- a/includes/file.mimetypes.inc
+++ b/includes/file.mimetypes.inc
@@ -407,7 +407,6 @@ function file_default_mimetype_mapping() {
       'doc' => 14,
       'bin' => 15,
       'oda' => 16,
-      'ogg' => 17,
       'ogx' => 17,
       'pdf' => 18,
       'key' => 19,
@@ -629,6 +628,7 @@ function file_default_mimetype_mapping() {
       'm4a' => 188,
       'mp3' => 188,
       'mp2' => 188,
+      'ogg' => 189,
       'oga' => 189,
       'spx' => 189,
       'sid' => 190,
diff --git a/modules/simpletest/tests/file.test b/modules/simpletest/tests/file.test
index db4097c..3633bae 100644
--- a/modules/simpletest/tests/file.test
+++ b/modules/simpletest/tests/file.test
@@ -2618,6 +2618,7 @@ class FileMimeTypeTest extends DrupalWebTestCase {
       'foo.file_test_1' => 'madeup/file_test_1',
       'foo.file_test_2' => 'madeup/file_test_2',
       'foo.doc' => 'madeup/doc',
+      'test.ogg' => 'audio/ogg',
     );
 
     // Test using default mappings.
@@ -2656,6 +2657,7 @@ class FileMimeTypeTest extends DrupalWebTestCase {
       'foo.file_test_1' => 'application/octet-stream',
       'foo.file_test_2' => 'application/octet-stream',
       'foo.doc' => 'application/octet-stream',
+      'test.ogg' => 'application/octet-stream',
     );
 
     foreach ($test_case as $input => $expected) {