diff --git a/ci/check-documentation-diff.py b/ci/check-documentation-diff.py
index 088b0bcc4..a306a743d 100755
--- a/ci/check-documentation-diff.py
+++ b/ci/check-documentation-diff.py
@@ -13,7 +13,7 @@ if __name__ == "__main__":
         with open(diffname, 'w') as diff:
             subprocess.check_call(['git', 'diff'], stdout=diff)
             print('\033[91mYou have a diff in the documentation cache. Please update with:\033[0m')
-            print('     $ curl %s/%s | git apply -' % (os.environ['CI_ARTIFACTS_URL'], diffname.replace('../', '')))
+            print('     $ curl -L %s/%s | git apply -' % (os.environ['CI_ARTIFACTS_URL'], diffname.replace('../', '')))
 
     if res != 0:
         print('(note that it might take a few minutes for artefacts to be available on the server)\n')