diff --git a/configure.ac b/configure.ac
index 3a87e64c3f144e02a2c2c0ae91f315a30c2be47a..1e7d0cc92bc403d4269f6bc193daee68a82f76ec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -75,7 +75,7 @@ if test "x$enable_assembler" = xyes ; then
     AC_MSG_NOTICE([Looking for assembler files in $asm_path/.])
     found=no
     for tmp_f in aes.asm aes-encrypt.asm aes-decrypt.asm \
-		 arcfour-crypt.asm machine.m4; do
+		 arcfour-crypt.asm sha1-compress.asm machine.m4; do
 #       echo "Looking for $srcdir/$asm_path/$tmp_f"
       if test -f "$srcdir/$asm_path/$tmp_f"; then
 #        echo found