diff --git a/pkgs_envsetup.py b/pkgs_envsetup.py
index 10062e8c5e56c22771634384dab4f400d372f056..96a9e4275ef18391a307f637d3291c65f10f2643 100755
--- a/pkgs_envsetup.py
+++ b/pkgs_envsetup.py
@@ -35,9 +35,9 @@ def main():
                     "-q",
                     "-y",
                     "-o",
-                    "Dpkg::Options::='--force-confdef'",
+                    'Dpkg::Options::="--force-confdef"',
                     "-o",
-                    "Dpkg::Options::='--force-confold'",
+                    'Dpkg::Options::="--force-confold"',
                     pkg,
                 ],
                 shell=False,