diff --git a/numpy/_core/tests/test_stringdtype.py b/numpy/_core/tests/test_stringdtype.py
index 3ef2f3a52adc..eccd59f1f7be 100644
--- a/numpy/_core/tests/test_stringdtype.py
+++ b/numpy/_core/tests/test_stringdtype.py
@@ -1235,12 +1235,10 @@ def test_unary(string_array, unicode_array, function_name):
     ("find", (None, "A")),
     ("index", (None, "e")),
     ("join", ("-", None)),
-    ("ljust", (None, 12)),
     ("lstrip", (None, "A")),
     ("replace", (None, "A", "B")),
     ("rfind", (None, "A")),
     ("rindex", (None, "e")),
-    ("rjust", (None, 12)),
     ("rsplit", (None, "A")),
     ("rstrip", (None, "A")),
     ("split", (None, "A")),