diff --git a/tests/src/python/test_qgsdelimitedtextprovider_wanted.py b/tests/src/python/test_qgsdelimitedtextprovider_wanted.py
index 371276b779c..72d31c4370a 100644
--- a/tests/src/python/test_qgsdelimitedtextprovider_wanted.py
+++ b/tests/src/python/test_qgsdelimitedtextprovider_wanted.py
@@ -101,7 +101,7 @@ def test_003_field_naming():
             'data': 'Some data',
             'field_4': 'Some info',
             'data_2': 'NULL',
-            '28_1': 'NULL',
+            '28': 'NULL',
             '24.5': 'NULL',
             'field_3_1': 'NULL',
             'data_1': 'NULL',
@@ -128,7 +128,7 @@ def test_004_max_fields():
             'data': 'Some data',
             'field_4': 'Some info',
             'data_1': 'NULL',
-            '28_1': 'NULL',
+            '28': 'NULL',
             '24.5': 'NULL',
             '#fid': 2,
             '#geometry': 'None',