diff --git a/private/property.te b/private/property.te
index 29f4f1a..e72693a 100644
--- a/private/property.te
+++ b/private/property.te
@@ -395,10 +395,12 @@
 
 # Allow the shell to set MTE props, so that non-root users with adb shell
 # access can control the settings on their device.
+# Allow system apps to set MTE props, so Developer Options can set them.
 neverallow {
   domain
   -init
   -shell
+  -system_app
 } {
   arm64_memtag_prop
 }:property_service set;
diff --git a/private/system_app.te b/private/system_app.te
index 239686e..41fac62 100644
--- a/private/system_app.te
+++ b/private/system_app.te
@@ -34,6 +34,7 @@
 allow system_app icon_file:file r_file_perms;
 
 # Write to properties
+set_prop(system_app, arm64_memtag_prop)
 set_prop(system_app, bluetooth_a2dp_offload_prop)
 set_prop(system_app, bluetooth_audio_hal_prop)
 set_prop(system_app, bluetooth_prop)