diff --git a/modules/netns-isolation.nix b/modules/netns-isolation.nix
index 752d8e9..5c5fbb3 100644
--- a/modules/netns-isolation.nix
+++ b/modules/netns-isolation.nix
@@ -151,6 +151,7 @@ in {
           requiredBy = bindsTo;
           before = bindsTo;
           script = ''
+            ${ip} netns delete ${netnsName} 2> /dev/null || true
             ${ip} netns add ${netnsName}
             ${ipNetns} link set lo up
             ${ip} link add ${veth} type veth peer name ${peer}
@@ -179,7 +180,6 @@ in {
           serviceConfig = {
             Type = "oneshot";
             RemainAfterExit = "yes";
-            ExecStartPre = "-${ip} netns delete ${netnsName}";
           };
         };
       };