diff --git a/internal/web3ext/web3ext.go b/internal/web3ext/web3ext.go
index e0b0018b78..8cbaf04e19 100644
--- a/internal/web3ext/web3ext.go
+++ b/internal/web3ext/web3ext.go
@@ -157,8 +157,8 @@ web3._extend({
 			call: 'XDPoS_getLatestPoolStatus'
 		}),
 		new web3._extend.Method({
-			name: 'GetMissiedRoundsInEpochByBlockNum',
-			call: 'XDPoS_GetMissiedRoundsInEpochByBlockNum',
+			name: 'getMissiedRoundsInEpochByBlockNum',
+			call: 'XDPoS_getMissiedRoundsInEpochByBlockNum',
 			params: 1,
 			inputFormatter: [web3._extend.formatters.inputBlockNumberFormatter]
 		}),