diff --git a/lib/freebsd/x86-mes-gcc/crt1.c b/lib/freebsd/x86-mes-gcc/crt1.c
index a5998043..151d0279 100644
--- a/lib/freebsd/x86-mes-gcc/crt1.c
+++ b/lib/freebsd/x86-mes-gcc/crt1.c
@@ -48,7 +48,7 @@ _start ()
   asm (
        "mov     %%ebp,%%eax\n\t"
        "add     $4,%%eax\n\t"
-       "movzbl  (%%eax),%%eax\n\t"
+       "mov     (%%eax),%%eax\n\t"
        "add     $3,%%eax\n\t"
        "shl     $2,%%eax\n\t"
        "add     %%ebp,%%eax\n\t"
@@ -64,7 +64,7 @@ _start ()
 
        "mov     %ebp,%eax\n\t"
        "add     $4,%eax\n\t"
-       "movzbl  (%eax),%eax\n\t"
+       "mov     (%eax),%eax\n\t"
        "push    %eax\n\t"
 
        "call    main\n\t"
diff --git a/lib/freebsd/x86-mes-mescc/crt1.c b/lib/freebsd/x86-mes-mescc/crt1.c
index 0e92ad34..83cde649 100644
--- a/lib/freebsd/x86-mes-mescc/crt1.c
+++ b/lib/freebsd/x86-mes-mescc/crt1.c
@@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
  * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2017,2018,2019,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
  *
  * This file is part of GNU Mes.
  *
@@ -37,7 +37,7 @@ _start ()
   asm ("mov____%ebp,%eax");
   asm ("add____$i8,%eax !4");
 
-  asm ("movzbl_(%eax),%eax");
+  asm ("mov____(%eax),%eax");
   asm ("add____$i8,%eax !3");
 
   asm ("shl____$i8,%eax !0x02");
@@ -51,7 +51,7 @@ _start ()
 
   asm ("mov____%ebp,%eax");
   asm ("add____$i8,%eax !4");
-  asm ("movzbl_(%eax),%eax");
+  asm ("mov____(%eax),%eax");
   asm ("push___%eax");
 
   main ();
diff --git a/lib/linux/x86-mes-gcc/crt0.c b/lib/linux/x86-mes-gcc/crt0.c
index 91bfda8b..91ec0e55 100644
--- a/lib/linux/x86-mes-gcc/crt0.c
+++ b/lib/linux/x86-mes-gcc/crt0.c
@@ -33,7 +33,7 @@ _start ()
   asm (
        "mov     %%ebp,%%eax\n\t"
        "add     $4,%%eax\n\t"
-       "movzbl  (%%eax),%%eax\n\t"
+       "mov     (%%eax),%%eax\n\t"
        "add     $3,%%eax\n\t"
        "shl     $2,%%eax\n\t"
        "add     %%ebp,%%eax\n\t"
@@ -48,7 +48,7 @@ _start ()
 
        "mov     %ebp,%eax\n\t"
        "add     $4,%eax\n\t"
-       "movzbl  (%eax),%eax\n\t"
+       "mov     (%eax),%eax\n\t"
        "push    %eax\n\t"
 
        "call    _main\n\t"
diff --git a/lib/linux/x86-mes-gcc/crt1.c b/lib/linux/x86-mes-gcc/crt1.c
index a909199b..74cfe066 100644
--- a/lib/linux/x86-mes-gcc/crt1.c
+++ b/lib/linux/x86-mes-gcc/crt1.c
@@ -1,6 +1,7 @@
 /* -*-comment-start: "//";comment-end:""-*-
  * GNU Mes --- Maxwell Equations of Software
  * Copyright © 2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2021 Paul Dersey <pdersey@gmail.com>
  *
  * This file is part of GNU Mes.
  *
@@ -48,7 +49,7 @@ _start ()
   asm (
        "mov     %%ebp,%%eax\n\t"
        "add     $4,%%eax\n\t"
-       "movzbl  (%%eax),%%eax\n\t"
+       "mov     (%%eax),%%eax\n\t"
        "add     $3,%%eax\n\t"
        "shl     $2,%%eax\n\t"
        "add     %%ebp,%%eax\n\t"
@@ -64,7 +65,7 @@ _start ()
 
        "mov     %ebp,%eax\n\t"
        "add     $4,%eax\n\t"
-       "movzbl  (%eax),%eax\n\t"
+       "mov     (%eax),%eax\n\t"
        "push    %eax\n\t"
 
        "call    main\n\t"
diff --git a/lib/linux/x86-mes-mescc/crt1.c b/lib/linux/x86-mes-mescc/crt1.c
index e4ef3c38..05f189d1 100644
--- a/lib/linux/x86-mes-mescc/crt1.c
+++ b/lib/linux/x86-mes-mescc/crt1.c
@@ -1,6 +1,6 @@
 /* -*-comment-start: "//";comment-end:""-*-
  * GNU Mes --- Maxwell Equations of Software
- * Copyright © 2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ * Copyright © 2017,2018,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
  *
  * This file is part of GNU Mes.
  *
@@ -37,7 +37,7 @@ _start ()
   asm ("mov____%ebp,%eax");
   asm ("add____$i8,%eax !4");
 
-  asm ("movzbl_(%eax),%eax");
+  asm ("mov____(%eax),%eax");
   asm ("add____$i8,%eax !3");
 
   asm ("shl____$i8,%eax !0x02");
@@ -51,7 +51,7 @@ _start ()
 
   asm ("mov____%ebp,%eax");
   asm ("add____$i8,%eax !4");
-  asm ("movzbl_(%eax),%eax");
+  asm ("mov____(%eax),%eax");
   asm ("push___%eax");
 
   main ();