diff --git a/install/calculate b/install/calculate
index 824a65d..a78613d 100755
--- a/install/calculate
+++ b/install/calculate
@@ -5445,7 +5445,12 @@ sub createiso{
 		$isolinux = "syslinux";
 	}
 	else {
-		$copyflash = qq| && cp -a $target/isolinux/memtest $target/syslinux/ &&
+		my $addsoft;
+		{
+			my $mempath = "$target/isolinux/memtest";
+			if(-e $mempath){$addsoft .= "&& cp -a $mempath $target/syslinux/";}
+		}
+		$copyflash = qq| $addsoft &&
 			cp -a $target/isolinux/isolinux.bin $target/syslinux/ &&
 			cp -a $target/isolinux/calcmenu.c32 $target/syslinux/ &&
 			cp    $target/isolinux/boot.jpg $target/syslinux/