diff --git a/mach/mantra/int/em.c b/mach/mantra/int/em.c
index b3712977..c62b007e 100644
--- a/mach/mantra/int/em.c
+++ b/mach/mantra/int/em.c
@@ -19,6 +19,8 @@
 #include <em_path.h>
 #include <local.h>
 
+char rcs_id[]	=	"$Header$" ;
+
 #define MAGIC 07255
 
 struct header {
diff --git a/mach/pdp/int/em.c b/mach/pdp/int/em.c
index b3712977..c62b007e 100644
--- a/mach/pdp/int/em.c
+++ b/mach/pdp/int/em.c
@@ -19,6 +19,8 @@
 #include <em_path.h>
 #include <local.h>
 
+char rcs_id[]	=	"$Header$" ;
+
 #define MAGIC 07255
 
 struct header {