diff --git a/alpine/files/Install_Script.sh b/alpine/files/Install_Script.sh
index b4f5fae..5abec34 100644
--- a/alpine/files/Install_Script.sh
+++ b/alpine/files/Install_Script.sh
@@ -11,7 +11,8 @@ echo "Current FoundryVTT Release version is ${FVTT_VERSION}."
 # Set permissions.
 mkdir -p /foundry/fvtt /foundry/data
 # chown 99:100 -R /foundry
-find /foundry ! -user 99:100 -exec chown 99:100 {} \;
+find /foundry ! -user 99 -exec chown 99 {} \;
+find /foundry ! -group 100 -exec chgrp 100 {} \;
 # chmod 776 -R /foundry
 find /foundry ! -perm 776 -exec chmod 776 {} \;
 chmod +x /foundry/fvtt/resources/app/main.js