diff --git a/py/server/tests/test_learn_gather.py b/py/server/tests/test_learn_gather.py
index 611a3ebcb50..64a316be3f7 100644
--- a/py/server/tests/test_learn_gather.py
+++ b/py/server/tests/test_learn_gather.py
@@ -141,7 +141,7 @@ def base_test(self, source, model, np_dtype):
         gatherer_colmajor = lambda rowset, colset: gather.table_to_numpy_2d(rowset, colset,
                                                                             gather.MemoryLayout.COLUMN_MAJOR, np_dtype)
 
-        array_from_table = to_pandas(source).values
+        array_from_table = to_pandas(source, conv_null=False).values
 
         gathered_rowmajor = gatherer_rowmajor(rows, cols)
         gathered_colmajor = gatherer_colmajor(rows, cols)