diff --git a/tests.py b/tests.py
index e09a4efeb..ba3c3fd0d 100644
--- a/tests.py
+++ b/tests.py
@@ -38,7 +38,7 @@ class DeployTest(unittest.TestCase):
             "admin",
             self.projname,
         ]
-        code, output = exec_cmd(cmd, cwd=self.workdir, shell=True)
+        code, output = exec_cmd(cmd, cwd=self.workdir)
         print(output)
         self.assertEqual(code, 0)