diff --git a/mach/m68k2/libsys/head_em.s b/mach/m68k2/libsys/head_em.s
index a47d8eea..b761b8fe 100644
--- a/mach/m68k2/libsys/head_em.s
+++ b/mach/m68k2/libsys/head_em.s
@@ -54,6 +54,7 @@ begtext:
 	jsr	_m_a_i_n
 	add	#010,sp
 EXIT:
+	move.w	d0,-(sp)
 	jsr	__exit
 
 	.sect .data
diff --git a/mach/m68k4/libsys/head_em.s b/mach/m68k4/libsys/head_em.s
index d8ce66df..6e08c707 100644
--- a/mach/m68k4/libsys/head_em.s
+++ b/mach/m68k4/libsys/head_em.s
@@ -53,6 +53,7 @@ begtext:
 	jsr	_m_a_i_n
 	add	#012,sp
 EXIT:
+	move.l	d0,-(sp)
 	jsr	__exit
 
 	.sect .data
diff --git a/mach/mantra/libsys/head_em.s b/mach/mantra/libsys/head_em.s
index 149b1ec9..41ff5208 100644
--- a/mach/mantra/libsys/head_em.s
+++ b/mach/mantra/libsys/head_em.s
@@ -54,7 +54,7 @@ begtext:
 	add	#012,sp
 EXIT:
 	move.l	d0,-(sp)
-	jsr	_exit
+	jsr	__exit
 
 	.sect .data
 begdata:
diff --git a/mach/pmds/libsys/head_em.s b/mach/pmds/libsys/head_em.s
index 00dc1708..6c7f1155 100644
--- a/mach/pmds/libsys/head_em.s
+++ b/mach/pmds/libsys/head_em.s
@@ -39,7 +39,7 @@ begtext:
 	add	#010,sp
 EXIT:
 	move.w	d0,-(sp)
-	jsr	_exit
+	jsr	__exit
 
 	.sect .data
 begdata:
diff --git a/mach/pmds4/libsys/head_em.s b/mach/pmds4/libsys/head_em.s
index 730c7b39..a91e5fb7 100644
--- a/mach/pmds4/libsys/head_em.s
+++ b/mach/pmds4/libsys/head_em.s
@@ -39,7 +39,7 @@ begtext:
 EXIT:
 
 	move.l	d0,-(sp)
-	jsr _exit
+	jsr __exit
 	! As a temporary measure
 	jsr .trp