diff --git a/configs/mainnet.yaml b/configs/mainnet.yaml
index 42845c235..3631b7045 100644
--- a/configs/mainnet.yaml
+++ b/configs/mainnet.yaml
@@ -76,8 +76,8 @@ BLS_WITHDRAWAL_PREFIX: 0x00
 
 # Time parameters
 # ---------------------------------------------------------------
-# 86400 seconds (1 day)
-MIN_GENESIS_DELAY: 86400
+# 172800 seconds (2 days)
+GENESIS_DELAY: 172800
 # 12 seconds
 SECONDS_PER_SLOT: 12
 # 2**0 (= 1) slots 12 seconds