diff --git a/programs/librapay_api/src/lib.rs b/programs/librapay_api/src/lib.rs
index 3821d99b3..206c19acb 100644
--- a/programs/librapay_api/src/lib.rs
+++ b/programs/librapay_api/src/lib.rs
@@ -32,9 +32,8 @@ pub fn create_genesis<T: Client>(from_key: &Keypair, client: &T, amount: u64) ->
         &from_key.pubkey(),
         &libra_genesis_key.pubkey(),
         1,
-        bincode::serialize(&LibraAccountState::create_genesis(1))
-            .unwrap()
-            .len() as u64,
+        bincode::serialized_size(&LibraAccountState::create_genesis(amount).unwrap()).unwrap()
+            as u64,
         &solana_move_loader_api::id(),
     );
     client.send_instruction(&from_key, instruction).unwrap();