diff --git a/units/systemd-portabled.service.in b/units/systemd-portabled.service.in
index a868f61dba..a44cdb30a4 100644
--- a/units/systemd-portabled.service.in
+++ b/units/systemd-portabled.service.in
@@ -20,7 +20,7 @@ CapabilityBoundingSet=CAP_KILL CAP_SYS_PTRACE CAP_SYS_ADMIN CAP_SETGID CAP_SYS_C
 MemoryDenyWriteExecute=yes
 RestrictRealtime=yes
 RestrictAddressFamilies=AF_UNIX AF_NETLINK AF_INET AF_INET6
-SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @obsolete @raw-io @reboot @swap
+SystemCallFilter=@system-service @mount
 SystemCallArchitectures=native
 LockPersonality=yes
 IPAddressDeny=any