diff --git a/postinst.sh b/postinst.sh
old mode 100644
new mode 100755
index 4c3aa2763..17ce956e2
--- a/postinst.sh
+++ b/postinst.sh
@@ -1 +1,4 @@
-chmod 755 /usr/lib/ipfs-station/resources/app/node_modules/go-ipfs-dep/go-ipfs/ipfs
\ No newline at end of file
+#! /usr/bin/env bash
+set -e
+chmod 755 /usr/lib/ipfs-station/resources/app/node_modules/go-ipfs-dep/go-ipfs/ipfs
+echo "Changed permissions correctly"