diff --git a/src/MCPClient/lib/clientScripts/check_for_access_directory.py b/src/MCPClient/lib/clientScripts/check_for_access_directory.py
index 44a17f0f74..27f926dc2c 100755
--- a/src/MCPClient/lib/clientScripts/check_for_access_directory.py
+++ b/src/MCPClient/lib/clientScripts/check_for_access_directory.py
@@ -35,7 +35,7 @@
 from fileOperations import rename
 
 
-def something(
+def main(
     job,
     SIPDirectory,
     accessDirectory,
@@ -45,11 +45,10 @@ def something(
     date,
     copy=False,
 ):
-    # exitCode = 435
     exitCode = 179
     job.pyprint(SIPDirectory)
     # For every file, & directory Try to find the matching file & directory in the objects directory
-    for path, dirs, files in os.walk(accessDirectory):
+    for path, _, files in os.walk(accessDirectory):
         for file in files:
             accessPath = os.path.join(path, file)
             objectPath = accessPath.replace(accessDirectory, objectsDirectory, 1)
@@ -78,7 +77,7 @@ def something(
                 for objectUUID, objectPath in files.values_list(
                     "uuid", "currentlocation"
                 ):
-                    objectExtension = objectPath.replace(objectNameLike, "", 1)
+                    objectExtension = objectPath.decode().replace(objectNameLike, "", 1)
                     job.pyprint(
                         objectName[objectNameExtensionIndex + 1 :],
                         objectExtension,
@@ -173,7 +172,7 @@ def call(jobs):
                 except:
                     job.pyprint("error creating DIP directory")
 
-                exitCode = something(
+                exitCode = main(
                     job,
                     SIPDirectory,
                     accessDirectory,
diff --git a/src/MCPClient/tests/test_check_for_access_directory.py b/src/MCPClient/tests/test_check_for_access_directory.py
new file mode 100644
index 0000000000..01e84db0b0
--- /dev/null
+++ b/src/MCPClient/tests/test_check_for_access_directory.py
@@ -0,0 +1,121 @@
+import check_for_access_directory
+import pytest
+from django.utils import timezone
+from job import Job
+from main.models import Event
+from main.models import File
+from main.models import SIP
+
+
+@pytest.mark.django_db
+def test_main(mocker, tmp_path):
+    job = mocker.Mock(spec=Job)
+    date = timezone.now()
+
+    sip_directory = tmp_path / "sip"
+    sip_directory.mkdir()
+
+    sip = SIP.objects.create(currentpath=sip_directory.as_posix())
+
+    access_directory = tmp_path / "access"
+    access_directory.mkdir()
+    (access_directory / "file1.txt").touch()
+    (access_directory / "file2.txt").touch()
+
+    objects_directory = tmp_path / "objects"
+    objects_directory.mkdir()
+    (objects_directory / "file1.txt").touch()
+    (objects_directory / "file2.txt").touch()
+    (objects_directory / "file3.txt").touch()
+
+    dip_directory = tmp_path / "dip"
+    dip_directory.mkdir()
+    (dip_directory / "objects").mkdir()
+
+    # Add access files to the database.
+    File.objects.create(
+        sip=sip,
+        originallocation=(access_directory / "file1.txt").as_posix().encode(),
+        currentlocation=(access_directory / "file1.txt").as_posix().encode(),
+    )
+    File.objects.create(
+        sip=sip,
+        originallocation=(access_directory / "file2.txt").as_posix().encode(),
+        currentlocation=(access_directory / "file2.txt").as_posix().encode(),
+    )
+    assert (
+        File.objects.filter(
+            sip=sip,
+            currentlocation__startswith=access_directory.as_posix(),
+        ).count()
+        == 2
+    )
+
+    # Add objects files to the database.
+    File.objects.create(
+        sip=sip,
+        originallocation=(objects_directory / "file1.txt").as_posix().encode(),
+        currentlocation=(objects_directory / "file1.txt").as_posix().encode(),
+    )
+    File.objects.create(
+        sip=sip,
+        originallocation=(objects_directory / "file2.txt").as_posix().encode(),
+        currentlocation=(objects_directory / "file2.txt").as_posix().encode(),
+    )
+    File.objects.create(
+        sip=sip,
+        originallocation=(objects_directory / "file3.txt").as_posix().encode(),
+        currentlocation=(objects_directory / "file3.txt").as_posix().encode(),
+    )
+
+    # The DIP objects directory is initially empty.
+    assert (
+        File.objects.filter(
+            sip=sip,
+            currentlocation__startswith=(dip_directory / "objects").as_posix(),
+        ).count()
+        == 0
+    )
+
+    # And there are no PREMIS "movement" events.
+    assert Event.objects.filter(event_type="movement").count() == 0
+
+    result = check_for_access_directory.main(
+        job,
+        sip_directory.as_posix(),
+        access_directory.as_posix(),
+        objects_directory.as_posix(),
+        dip_directory.as_posix(),
+        str(sip.uuid),
+        date,
+    )
+
+    # Files have been moved from the access directory to the DIP objects directory.
+    assert (
+        File.objects.filter(
+            sip=sip,
+            currentlocation__startswith=access_directory.as_posix(),
+        ).count()
+        == 0
+    )
+    assert (
+        File.objects.filter(
+            sip=sip,
+            currentlocation__startswith=(dip_directory / "objects").as_posix(),
+            currentlocation__endswith=".txt",
+        ).count()
+        == 2
+    )
+
+    # And PREMIS "movement" events are created accordingly.
+    assert (
+        Event.objects.filter(
+            event_type="movement",
+            event_outcome_detail__startswith=f'moved from="{access_directory.as_posix()}',
+            event_outcome_detail__contains=f'moved to="{(dip_directory / "objects").as_posix()}',
+            event_datetime__date=date,
+        ).count()
+        == 2
+    )
+
+    assert result == 179
diff --git a/src/archivematicaCommon/lib/fileOperations.py b/src/archivematicaCommon/lib/fileOperations.py
index 261def7d72..96566233a1 100644
--- a/src/archivematicaCommon/lib/fileOperations.py
+++ b/src/archivematicaCommon/lib/fileOperations.py
@@ -266,7 +266,7 @@ def updateFileLocation(
     To suppress creation of an event, pass the createEvent keyword argument (for example, if the file moved due to the renaming of a parent directory and not the file itself).
     """
     if not fileUUID or fileUUID == "None":
-        kwargs = {"removedtime__isnull": True, "currentlocation": src}
+        kwargs = {"removedtime__isnull": True, "currentlocation": src.encode()}
 
         if sipUUID:
             kwargs["sip_id"] = sipUUID
diff --git a/src/dashboard/src/main/models.py b/src/dashboard/src/main/models.py
index 66c2c589a8..221818e9c7 100644
--- a/src/dashboard/src/main/models.py
+++ b/src/dashboard/src/main/models.py
@@ -759,8 +759,8 @@ def __str__(self):
             _("File %(uuid)s:%(originallocation)s now at %(currentlocation)s")
             % {
                 "uuid": self.uuid,
-                "originallocation": self.originallocation,
-                "currentlocation": self.currentlocation,
+                "originallocation": self.originallocation.decode(),
+                "currentlocation": self.currentlocation.decode(),
             }
         )
 
@@ -812,8 +812,8 @@ def __str__(self):
             _("Directory %(uuid)s: %(originallocation)s now at %(currentlocation)s")
             % {
                 "uuid": self.uuid,
-                "originallocation": self.originallocation,
-                "currentlocation": self.currentlocation,
+                "originallocation": self.originallocation.decode(),
+                "currentlocation": self.currentlocation.decode(),
             }
         )