diff --git a/bindings/pyroot/pythonizations/test/ml_dataloader.py b/bindings/pyroot/pythonizations/test/ml_dataloader.py
index 2d49c2a11dc13..491bcaf8ae5aa 100644
--- a/bindings/pyroot/pythonizations/test/ml_dataloader.py
+++ b/bindings/pyroot/pythonizations/test/ml_dataloader.py
@@ -5890,7 +5890,7 @@ def test14_big_data_replacement_true(self):
 
         # max samling strategy to guarantee duplicate sampled entires
         max_sampling_ratio = entries_in_rdf_minor / entries_in_rdf_major
-        sampling_ratio = round(uniform(0.01, max_sampling_ratio), 2)
+        sampling_ratio = round(uniform(0.01, max_sampling_ratio - 0.01), 2)
 
         error_message = f"\n Batch size: {batch_size}\
             Number of major entries: {entries_in_rdf_major} \