diff --git a/mach/m68k2/libem/Makefile b/mach/m68k2/libem/Makefile
index 2877a35c..2ec63fad 100644
--- a/mach/m68k2/libem/Makefile
+++ b/mach/m68k2/libem/Makefile
@@ -3,6 +3,11 @@ install:
 	../../install libem_s.a tail_em.rt
 	../../install libem_s.vend.a tail_em.vend
 
+cmp:
+	../../compare head_em.s head_em
+	../../compare libem_s.a tail_em.rt
+	../../compare libem_s.vend.a tail_em.vend
+
 clean :
 
 opr :