diff --git a/Machines/Enterprise/HostFS/compile.sh b/Machines/Enterprise/HostFS/compile.sh
old mode 100644
new mode 100755
index 1e832908f..d399515a6
--- a/Machines/Enterprise/HostFS/compile.sh
+++ b/Machines/Enterprise/HostFS/compile.sh
@@ -1 +1 @@
-pyz80 --obj=hostfs.rom hostfs.z80s && xxd -i hostfs.rom
+pyz80.py --obj=hostfs.rom hostfs.z80s && xxd -i hostfs.rom