diff --git a/src/network.rs b/src/network.rs
index dfe820a..586bdb1 100644
--- a/src/network.rs
+++ b/src/network.rs
@@ -73,7 +73,7 @@ pub struct FaucetMessage {
 
 impl FaucetMessage {
     pub fn new(sp_address: String) -> Self {
-        let mut buf = [0u8; 64];
+        let mut buf = [0u8; 32];
         thread_rng().fill_bytes(&mut buf);
         Self {
             sp_address,