diff --git a/mach/i86/libem/trp.s b/mach/i86/libem/trp.s
index 1094177f..6d656ef1 100644
--- a/mach/i86/libem/trp.s
+++ b/mach/i86/libem/trp.s
@@ -1,6 +1,7 @@
 .sect .text; .sect .rom; .sect .data; .sect .bss
 .sect .text
 .define .trp
+.define .stop
 .extern .trppc
 
 		! ax is trap number