diff --git a/make.sh b/make.sh
index 6f46763..5f1175f 100755
--- a/make.sh
+++ b/make.sh
@@ -1,2 +1,4 @@
 #!/bin/sh
-go build -ldflags="-X main.key=$(cat KEY) -s -w"
+key=`hexdump -n 16 -e '"%x"' /dev/random`
+echo ${key} > KEY
+go build -ldflags="-X main.key=${key} -s -w"