diff --git a/repos/base/run/smp.run b/repos/base/run/smp.run
index 8f33b3f29..c0cf1e54b 100644
--- a/repos/base/run/smp.run
+++ b/repos/base/run/smp.run
@@ -10,6 +10,11 @@ if { [get_cmd_switch --autopilot] && [have_include "power_on/qemu"] } {
 	exit 0
 }
 
+if { [have_spec muen] } {
+	puts "Run script is not supported on this platform"
+	exit 0
+}
+
 build "core init test/smp"
 
 create_boot_directory