diff --git a/beecrypt/acinclude.m4 b/beecrypt/acinclude.m4

index 7df3867..a9e36a2 100644

--- a/beecrypt/acinclude.m4

+++ b/beecrypt/acinclude.m4

@@ -1408,7 +1408,7 @@ AC_DEFUN([BEE_ASM_SOURCES],[

   echo > sha1opt.s

   if test "$ac_enable_debug" != yes; then

     case $bc_target_arch in

-    arm)

+    arm*)

       AC_CONFIG_COMMANDS([mpopt.arm],[

         m4 $srcdir/gas/mpopt.arm.m4 > mpopt.s

         ])