diff --git a/tests/test_cmdline.py b/tests/test_cmdline.py
index 16d56e4f..bc61b24b 100644
--- a/tests/test_cmdline.py
+++ b/tests/test_cmdline.py
@@ -361,14 +361,14 @@ def expect_aligned(data):
         def create_results(extra_args):
 
             self.template(
-                [sys.executable, "-m", "viztracer", "--ignore_frozen", "-o", "result1.json", "cmdline_test.py"] + extra_args,
-                expected_output_file="result1.json",
+                [sys.executable, "-m", "viztracer", "--ignore_frozen", "-o", "res1.json", "cmdline_test.py"] + extra_args,
+                expected_output_file="res1.json",
                 cleanup=False,
                 check_func=expect_no_sync_marker,
             )
             self.template(
-                [sys.executable, "-m", "viztracer", "--ignore_frozen", "-o", "result2.json", "cmdline_test.py"] + extra_args,
-                expected_output_file="result2.json",
+                [sys.executable, "-m", "viztracer", "--ignore_frozen", "-o", "res2.json", "cmdline_test.py"] + extra_args,
+                expected_output_file="res2.json",
                 cleanup=False,
                 check_func=expect_no_sync_marker,
             )
@@ -378,19 +378,19 @@ def create_results(extra_args):
                 create_results(extra_args)
 
                 self.template(
-                    [sys.executable, "-m", "viztracer", "--align_combine", "result1.json", "result2.json"],
+                    [sys.executable, "-m", "viztracer", "--align_combine", "res1.json", "res2.json"],
                     expected_output_file="result.json",
                     check_func=expect_aligned,
                 )
 
                 self.template(
-                    [sys.executable, "-m", "viztracer", "--align_combine", "result1.json", "result2.json", "--use_sync_marker"],
+                    [sys.executable, "-m", "viztracer", "--align_combine", "res1.json", "res2.json", "--use_sync_marker"],
                     expected_output_file="result.json",
                     check_func=expect_aligned,
                 )
             finally:
-                self.cleanup(output_file="result1.json", script_name="cmdline_test.py")
-                self.cleanup(output_file="result2.json", script_name="cmdline_test.py")
+                self.cleanup(output_file="res1.json", script_name="cmdline_test.py")
+                self.cleanup(output_file="res2.json", script_name="cmdline_test.py")
 
     @package_matrix(["~orjson", "orjson"])
     def test_align_combine_sync_marker(self):
@@ -415,9 +415,9 @@ def expect_aligned(data):
             self.assertAlmostEqual(0, offset_ts)
 
         def expect_aligned_to_sync_marker(data):
-            with open('result1.json', 'r') as f:
+            with open('res1.json', 'r') as f:
                 result1 = json.load(f)
-            with open('result2.json', 'r') as f:
+            with open('res2.json', 'r') as f:
                 result2 = json.load(f)
 
             self.assertIn('sync_marker', result1['viztracer_metadata'])
@@ -441,15 +441,15 @@ def expect_aligned_to_sync_marker(data):
 
         def create_results(extra_args):
             self.template(
-                [sys.executable, "-m", "viztracer", "--ignore_frozen", "-o", "result1.json", "cmdline_test.py"] + extra_args,
-                expected_output_file="result1.json",
+                [sys.executable, "-m", "viztracer", "--ignore_frozen", "-o", "res1.json", "cmdline_test.py"] + extra_args,
+                expected_output_file="res1.json",
                 script=test_script,
                 cleanup=False,
                 check_func=expect_sync_marker,
             )
             self.template(
-                [sys.executable, "-m", "viztracer", "--ignore_frozen", "-o", "result2.json", "cmdline_test.py"] + extra_args,
-                expected_output_file="result2.json",
+                [sys.executable, "-m", "viztracer", "--ignore_frozen", "-o", "res2.json", "cmdline_test.py"] + extra_args,
+                expected_output_file="res2.json",
                 script=test_script,
                 cleanup=False,
                 check_func=expect_sync_marker,
@@ -461,19 +461,19 @@ def create_results(extra_args):
                 create_results(extra_args)
 
                 self.template(
-                    [sys.executable, "-m", "viztracer", "--align_combine", "result1.json", "result2.json"],
+                    [sys.executable, "-m", "viztracer", "--align_combine", "res1.json", "res2.json"],
                     expected_output_file="result.json",
                     check_func=expect_aligned,
                 )
 
                 self.template(
-                    [sys.executable, "-m", "viztracer", "--align_combine", "result1.json", "result2.json", "--use_sync_marker"],
+                    [sys.executable, "-m", "viztracer", "--align_combine", "res1.json", "res2.json", "--use_sync_marker"],
                     expected_output_file="result.json",
                     check_func=expect_aligned_to_sync_marker,
                 )
             finally:
-                self.cleanup(output_file="result1.json", script_name="cmdline_test.py")
-                self.cleanup(output_file="result2.json", script_name="cmdline_test.py")
+                self.cleanup(output_file="res1.json", script_name="cmdline_test.py")
+                self.cleanup(output_file="res2.json", script_name="cmdline_test.py")
 
     def test_tracer_entries(self):
         self.template([sys.executable, "-m", "viztracer", "--tracer_entries", "1000", "cmdline_test.py"])