diff --git a/rhodecode/lib/diffs.py b/rhodecode/lib/diffs.py
--- a/rhodecode/lib/diffs.py
+++ b/rhodecode/lib/diffs.py
@@ -105,7 +105,7 @@ def get_gitdiff(filenode_old, filenode_n
     new_raw_id = getattr(filenode_new.changeset, 'raw_id', '0' * 40)
 
     repo = filenode_new.changeset.repository
-    vcs_gitdiff = repo._get_diff(old_raw_id, new_raw_id, filenode_new.path,
+    vcs_gitdiff = repo.get_diff(old_raw_id, new_raw_id, filenode_new.path,
                                  ignore_whitespace, context)
 
     return vcs_gitdiff