diff --git a/tests/helpers/monkey_patches.py b/tests/helpers/monkey_patches.py
index 906bce0..6a9792e 100644
--- a/tests/helpers/monkey_patches.py
+++ b/tests/helpers/monkey_patches.py
@@ -8,7 +8,8 @@
     "findChanges": None,
     "mediaChangesZip": None,
     "addFilesFromZip": None,
-    "syncDelete": None
+    "syncDelete": None,
+    "_logChanges": None,
 }
 
 db_orig_funcs = {
@@ -28,6 +29,7 @@ def make_cwd_safe(original_func):
         mediamanager_orig_funcs["mediaChangesZip"] = MediaManager.mediaChangesZip
         mediamanager_orig_funcs["addFilesFromZip"] = MediaManager.addFilesFromZip
         mediamanager_orig_funcs["syncDelete"] = MediaManager.syncDelete
+        mediamanager_orig_funcs["_logChanges"] = MediaManager._logChanges
 
         def wrapper(instance, *args):
             old_cwd = os.getcwd()
@@ -43,6 +45,7 @@ def wrapper(instance, *args):
     MediaManager.mediaChangesZip = make_cwd_safe(MediaManager.mediaChangesZip)
     MediaManager.addFilesFromZip = make_cwd_safe(MediaManager.addFilesFromZip)
     MediaManager.syncDelete = make_cwd_safe(MediaManager.syncDelete)
+    MediaManager._logChanges = make_cwd_safe(MediaManager._logChanges)
 
 
 def unpatch_mediamanager():
@@ -52,11 +55,13 @@ def unpatch_mediamanager():
     MediaManager.mediaChangesZip = mediamanager_orig_funcs["mediaChangesZip"]
     MediaManager.addFilesFromZip = mediamanager_orig_funcs["addFilesFromZip"]
     MediaManager.syncDelete = mediamanager_orig_funcs["syncDelete"]
+    MediaManager._logChanges = mediamanager_orig_funcs["_logChanges"]
 
     mediamanager_orig_funcs["findChanges"] = None
     mediamanager_orig_funcs["mediaChangesZip"] = None
     mediamanager_orig_funcs["mediaChangesZip"] = None
     mediamanager_orig_funcs["mediaChangesZip"] = None
+    mediamanager_orig_funcs["_logChanges"] = None
 
 
 def monkeypatch_db():
diff --git a/tests/test_web_media.py b/tests/test_web_media.py
index 0ee6481..ca59d68 100644
--- a/tests/test_web_media.py
+++ b/tests/test_web_media.py
@@ -355,3 +355,46 @@ def test_sync_compare_database_to_expected(self):
             dbpath
         ))
         os.unlink(dbpath)
+
+    def test_sync_mediaChanges(self):
+        client = self.client_syncer
+        client2 = self.create_client_syncer(self.colutils.create_empty_col(), self.hkey, self.server_test_app)
+        server = helpers.server_utils.get_syncer_for_hkey(self.server_app, self.hkey, 'media')
+        self.assertEqual(server.mediaChanges(lastUsn=client.col.media.lastUsn())['data'], [])
+
+        helpers.server_utils.add_files_to_mediasyncer(client, [
+            helpers.file_utils.create_named_file("a", "lastUsn a"),
+            helpers.file_utils.create_named_file("b", "lastUsn b"),
+            helpers.file_utils.create_named_file("c", "lastUsn c"),
+        ], update_db=True)
+        self.assertEqual(client.sync(), "OK")
+        self.assertEqual(server.mediaChanges(lastUsn=client.col.media.lastUsn())['data'], [])
+
+        self.assertEqual(client2.sync(), "OK")
+        os.remove(os.path.join(client2.col.media.dir(), "c"))
+        client2.col.media._logChanges()
+        self.assertEqual(client2.sync(), "OK")
+        server.col.media._logChanges()
+        self.assertEqual(server.mediaChanges(lastUsn=client.col.media.lastUsn())['data'], [['c', 4, None]])
+        self.assertEqual(client.sync(), "OK")
+        self.assertEqual(server.mediaChanges(lastUsn=client.col.media.lastUsn())['data'], [])
+
+        helpers.server_utils.add_files_to_mediasyncer(client, [
+            helpers.file_utils.create_named_file("d", "lastUsn d"),
+        ], update_db=True)
+        client.col.media._logChanges()
+        self.assertEqual(client.sync(), "OK")
+        self.assertEqual(server.mediaChanges(lastUsn=client2.col.media.lastUsn())['data'], [['d', 5, server.col.media._checksum(os.path.join(server.col.media.dir(), "d"))]])
+        self.assertEqual(client2.sync(), "OK")
+        self.assertEqual(server.mediaChanges(lastUsn=client2.col.media.lastUsn())['data'], [])
+
+        dpath = os.path.join(client.col.media.dir(), "d")
+        with open(dpath, "a") as f:
+                f.write("\nsome change")
+        # files with the same mtime and name are considered equivalent by anki.media.MediaManager._changes
+        os.utime(dpath, (315529200, 315529200))
+        client.col.media._logChanges()
+        self.assertEqual(client.sync(), "OK")
+        self.assertEqual(server.mediaChanges(lastUsn=client2.col.media.lastUsn())['data'], [['d', 6, server.col.media._checksum(os.path.join(server.col.media.dir(), "d"))]])
+        self.assertEqual(client2.sync(), "OK")
+        self.assertEqual(server.mediaChanges(lastUsn=client2.col.media.lastUsn())['data'], [])