diff --git a/module/mes/as-i386.mes b/module/mes/as-i386.mes
index a4394f83..dca7d45c 100644
--- a/module/mes/as-i386.mes
+++ b/module/mes/as-i386.mes
@@ -262,12 +262,12 @@
 (define (i386:accu/base)
   '(("mov____%edx,%ebx")                ; mov    %edx,%ebx
     ("xor____%edx,%edx")                ; xor    %edx,%edx
-    ("div____%ebx")))                   ; div    %ebx
+    ("idiv___%ebx")))                   ; div    %ebx
 
 (define (i386:accu%base)
   '(("mov____%edx,%ebx")                ; mov    %edx,%ebx
     ("xor____%edx,%edx")                ; xor    %edx,%edx
-    ("div____%ebx")                     ; div    %ebx
+    ("idiv___%ebx")                     ; div    %ebx
     ("mov____%edx,%eax")))              ; mov    %edx,%eax
 
 (define (i386:base->accu)
diff --git a/stage0/x86.M1 b/stage0/x86.M1
index 696d6ac9..1a70ff22 100644
--- a/stage0/x86.M1
+++ b/stage0/x86.M1
@@ -49,7 +49,7 @@ DEFINE cmp____$i8,0x32(%ebp) 83bd
 DEFINE cmp____$i8,0x8(%ebp) 837d
 DEFINE cmp____%al,%dl 38c2
 DEFINE cmp____%edx,%eax 39d0
-DEFINE div____%ebx f7f3
+DEFINE idiv___%ebx f7fb
 DEFINE int____$0x80 cd80
 DEFINE je32 0f84
 DEFINE jg32 0f8f
@@ -88,7 +88,7 @@ DEFINE mov____%ebp,%ecx 89e9
 DEFINE mov____%ebp,%edx 89ea
 DEFINE mov____%ecx,(%eax) 8908
 DEFINE mov____%edx,%eax 89d0
-DEFINE mov____%edx,%ebx 86d3
+DEFINE mov____%edx,%ebx 89d3
 DEFINE mov____%edx,%ecx 89d1
 DEFINE mov____%edx,(%eax) 8910
 DEFINE mov____%edx,0x32(%ebp) 8995
@@ -147,7 +147,6 @@ DEFINE sub____%esp,$i32 81ec
 DEFINE sub____%esp,$i8 83ec
 DEFINE test___%al,%al 84c0
 DEFINE test___%eax,%eax 85c0
-DEFINE xchg___%dl,%bl 86d3
 DEFINE xchg___%eax,(%esp) 870424
 DEFINE xor____$i32,%eax 35
 DEFINE xor____$i8,%ah 80f4