diff --git a/utils/Sync/sync/models/DocumentPreviewImage.py b/utils/Sync/sync/models/DocumentPreviewImage.py
index e60d3c46..731c8fbe 100644
--- a/utils/Sync/sync/models/DocumentPreviewImage.py
+++ b/utils/Sync/sync/models/DocumentPreviewImage.py
@@ -2,7 +2,6 @@ import os
 from tempfile import mkstemp
 
 from sync.models.Image import Image, default_url_factory
-from utils.hash import md5
 from utils.image import image_magick_pdf_to_img
 
 
@@ -50,9 +49,6 @@ class DocumentPreviewImage(Image):
     def _get_image_file(self):
         return self.temp_image_path
 
-    def __get_id(self):
-        return md5(self.file)
-
     def __get_hash(self):
         return self.provider.hash(self.file)
 
diff --git a/utils/Sync/sync/models/Image.py b/utils/Sync/sync/models/Image.py
index 99058f2a..2afec853 100644
--- a/utils/Sync/sync/models/Image.py
+++ b/utils/Sync/sync/models/Image.py
@@ -148,8 +148,7 @@ class Image(Model):
         return os.path.basename(self.file)
 
     def __get_id(self):
-        filename = os.path.basename(self.file)
-        return url_encode_text(filename)
+        return md5(self.file)
 
     def __get_hash(self):
         file_hash = self.provider.hash(self.file)