diff --git a/units/user-runtime-dir@.service.in b/units/user-runtime-dir@.service.in
index 434413525e..8c5407b881 100644
--- a/units/user-runtime-dir@.service.in
+++ b/units/user-runtime-dir@.service.in
@@ -12,6 +12,7 @@ Description=/run/user/%i mount wrapper
 Documentation=man:user@.service(5)
 After=systemd-user-sessions.service
 StopWhenUnneeded=yes
+IgnoreOnIsolate=yes
 
 [Service]
 ExecStart=@rootlibexecdir@/systemd-user-runtime-dir start %i