diff --git a/packdata.sh b/packdata.sh
index defe92c..ed3b49e 100755
--- a/packdata.sh
+++ b/packdata.sh
@@ -3,6 +3,10 @@ set -e
 export LC_ALL=C
 export TZ=UTC
 zip -9ojX  Game/blockattack.data source/AUTH
+if [ "$BLOCKATTACK_RESET_PERMISSIONS" = "1" ]; then
+	find Game/data -type f -exec chmod 644 {} +
+	find Game/data -type d -exec chmod 755 {} +
+fi
 pushd Game/data
 zip -9oX $(find ../blockattack.data ./* | sort) -x \*svn*
 popd
@@ -15,5 +19,5 @@ popd
 pushd source/misc/translation/
 ./build_mo_all.sh
 popd
-
+chmod 644 Game/blockattack.data
 exit 0