diff --git a/LibOS/shim/test/regression/test_libos.py b/LibOS/shim/test/regression/test_libos.py
index 578006db..dff690cc 100644
--- a/LibOS/shim/test/regression/test_libos.py
+++ b/LibOS/shim/test/regression/test_libos.py
@@ -98,9 +98,10 @@ class TC_01_Bootstrap(RegressionTestCase):
             stdout)
 
     def test_201_exec_same(self):
-        args = [str(i) for i in range(50)]
+        args = ['arg_#%d' % i for i in range(50)]
         stdout, _ = self.run_binary(['exec_same'] + args, timeout=40)
-        self.assertIn('\n'.join(args), stdout)
+        for arg in args:
+            self.assertIn(arg + '\n', stdout)
 
     def test_202_fork_and_exec(self):
         stdout, _ = self.run_binary(['fork_and_exec'], timeout=60)