diff --git a/core/src/genesis.rs b/core/src/genesis.rs
index 48ad7da122..72f683033f 100644
--- a/core/src/genesis.rs
+++ b/core/src/genesis.rs
@@ -25,14 +25,13 @@ lazy_static! {
         KeyPair::from_secret(DEV_GENESIS_PRI_KEY_2.parse().unwrap(),).unwrap();
 }
 
-pub fn default(dev_or_test_mode: bool) -> HashMap<Address, U256> {
+pub fn default(_dev_or_test_mode: bool) -> HashMap<Address, U256> {
     let mut accounts: HashMap<Address, U256> = HashMap::new();
-    if dev_or_test_mode {
-        let balance = U256::from_dec_str("5000000000000000000000000000000000")
-            .expect("Not overflow"); // 5*10^33
-        accounts.insert(DEV_GENESIS_KEY_PAIR.address(), balance);
-        accounts.insert(DEV_GENESIS_KEY_PAIR_2.address(), balance);
-    }
+    // FIXME: Decide the genesis initialization for mainnet.
+    let balance = U256::from_dec_str("5000000000000000000000000000000000")
+        .expect("Not overflow"); // 5*10^33
+    accounts.insert(DEV_GENESIS_KEY_PAIR.address(), balance);
+    accounts.insert(DEV_GENESIS_KEY_PAIR_2.address(), balance);
     accounts
 }