diff --git a/util/ceg/ce_back/as_back/bss.c b/util/ceg/ce_back/as_back/bss.c
index d47a2c8d..ee4aa28d 100644
--- a/util/ceg/ce_back/as_back/bss.c
+++ b/util/ceg/ce_back/as_back/bss.c
@@ -1,5 +1,4 @@
 #include "header.h"
-#include <em.h>
 
 common(n)
 arith n;
diff --git a/util/ceg/ce_back/as_back/gen1.c b/util/ceg/ce_back/as_back/gen1.c
index 79af73ec..6655466e 100644
--- a/util/ceg/ce_back/as_back/gen1.c
+++ b/util/ceg/ce_back/as_back/gen1.c
@@ -1,5 +1,4 @@
 #include "header.h"
-#include <em.h>
 
 gen1( w)
 ONE_BYTE w;
diff --git a/util/ceg/ce_back/as_back/gen2.c b/util/ceg/ce_back/as_back/gen2.c
index 73e41e54..43ecd023 100644
--- a/util/ceg/ce_back/as_back/gen2.c
+++ b/util/ceg/ce_back/as_back/gen2.c
@@ -1,5 +1,4 @@
 #include "header.h"
-#include <em.h>
 
 gen2( w)
 TWO_BYTES w;
diff --git a/util/ceg/ce_back/as_back/gen4.c b/util/ceg/ce_back/as_back/gen4.c
index 5b311b95..80f231a5 100644
--- a/util/ceg/ce_back/as_back/gen4.c
+++ b/util/ceg/ce_back/as_back/gen4.c
@@ -1,5 +1,4 @@
 #include "header.h"
-#include <em.h>
 
 gen4( w)
 FOUR_BYTES w;
diff --git a/util/ceg/ce_back/as_back/reloc1.c b/util/ceg/ce_back/as_back/reloc1.c
index 8d0d2c7e..a32fb61e 100644
--- a/util/ceg/ce_back/as_back/reloc1.c
+++ b/util/ceg/ce_back/as_back/reloc1.c
@@ -1,5 +1,4 @@
 #include "header.h"
-#include <em.h>
 
 reloc1( s, o, r)
 char *s;
diff --git a/util/ceg/ce_back/as_back/reloc2.c b/util/ceg/ce_back/as_back/reloc2.c
index f9f798aa..e07d35fe 100644
--- a/util/ceg/ce_back/as_back/reloc2.c
+++ b/util/ceg/ce_back/as_back/reloc2.c
@@ -1,5 +1,4 @@
 #include "header.h"
-#include <em.h>
 
 reloc2( s, o, r)
 char *s;
diff --git a/util/ceg/ce_back/as_back/reloc4.c b/util/ceg/ce_back/as_back/reloc4.c
index 98247455..14d6ad8e 100644
--- a/util/ceg/ce_back/as_back/reloc4.c
+++ b/util/ceg/ce_back/as_back/reloc4.c
@@ -1,5 +1,4 @@
 #include "header.h"
-#include <em.h>
 
 reloc4( s, o, r)
 char *s;