diff --git a/private/system_server.te b/private/system_server.te
index fa59ef8..85b8191 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -37,10 +37,12 @@
 allow system_server zygote:process sigchld;
 
 # May kill zygote on crashes.
-allow system_server zygote:process sigkill;
-allow system_server crash_dump:process sigkill;
-allow system_server webview_zygote:process sigkill;
-allow system_server app_zygote:process sigkill;
+allow system_server {
+  app_zygote
+  crash_dump
+  webview_zygote
+  zygote
+}:process { sigkill signull };
 
 # Read /system/bin/app_process.
 allow system_server zygote_exec:file r_file_perms;