diff --git a/src/portable/profile/default/service.conf b/src/portable/profile/default/service.conf
index 35dfd778f2..2cb54d84c3 100644
--- a/src/portable/profile/default/service.conf
+++ b/src/portable/profile/default/service.conf
@@ -24,6 +24,7 @@ LockPersonality=yes
 MemoryDenyWriteExecute=yes
 RestrictRealtime=yes
 RestrictNamespaces=yes
+DelegateNamespaces=no
 SystemCallFilter=@system-service
 SystemCallErrorNumber=EPERM
 SystemCallArchitectures=native
diff --git a/src/portable/profile/nonetwork/service.conf b/src/portable/profile/nonetwork/service.conf
index e8d2a9bb1a..29b7d6f622 100644
--- a/src/portable/profile/nonetwork/service.conf
+++ b/src/portable/profile/nonetwork/service.conf
@@ -22,6 +22,7 @@ LockPersonality=yes
 MemoryDenyWriteExecute=yes
 RestrictRealtime=yes
 RestrictNamespaces=yes
+DelegateNamespaces=no
 SystemCallFilter=@system-service
 SystemCallErrorNumber=EPERM
 SystemCallArchitectures=native
diff --git a/src/portable/profile/strict/service.conf b/src/portable/profile/strict/service.conf
index aa5bcfbb08..8e7d3300e2 100644
--- a/src/portable/profile/strict/service.conf
+++ b/src/portable/profile/strict/service.conf
@@ -20,6 +20,7 @@ NoNewPrivileges=yes
 MemoryDenyWriteExecute=yes
 RestrictRealtime=yes
 RestrictNamespaces=yes
+DelegateNamespaces=no
 SystemCallFilter=@system-service
 SystemCallErrorNumber=EPERM
 SystemCallArchitectures=native