diff --git a/etna/api/tests/test_pages.py b/etna/api/tests/test_pages.py
index 2f65bbb54..beae11be0 100644
--- a/etna/api/tests/test_pages.py
+++ b/etna/api/tests/test_pages.py
@@ -377,6 +377,8 @@ def compare_json(self, path: str, json_file: str):
                 api_data = re.sub(r"0_[a-zA-Z0-9]{6,7}", "0", api_data)
                 expected_data = re.sub(r"e_[a-zA-Z0-9]{6,7}", "e", expected_data)
                 api_data = re.sub(r"e_[a-zA-Z0-9]{6,7}", "e", api_data)
+                expected_data = re.sub(r"e_[a-zA-Z0-9]{6,7}", "_", expected_data)
+                api_data = re.sub(r"e_[a-zA-Z0-9]{6,7}", "_", api_data)
 
                 self.assertEqual(expected_data, api_data)