diff --git a/centchain/api.go b/centchain/api.go
index 2cf6f43fe..ef6627f18 100644
--- a/centchain/api.go
+++ b/centchain/api.go
@@ -524,9 +524,8 @@ func getErrorIDFromDispatchError(value any) (*registry.ErrorID, error) {
 }
 
 const (
-	ProxyExecutedEventName           = "Proxy.ProxyExecuted"
-	ResultFieldName                  = "Result.result"
-	ProxyExecutedExpectedLookupIndex = 41
+	ProxyExecutedEventName = "Proxy.ProxyExecuted"
+	ResultFieldName        = "Result.result"
 )
 
 func checkSuccessfulProxyExecution(meta *types.Metadata, events []*parser.Event, extrinsicIdx int) error {
@@ -544,7 +543,7 @@ func checkSuccessfulProxyExecution(meta *types.Metadata, events []*parser.Event,
 				return errors.New("result field has unexpected size")
 			}
 
-			if res[0].Value == nil && res[0].LookupIndex == ProxyExecutedExpectedLookupIndex {
+			if res[0].Value == nil {
 				// The DispatchResult is Ok(()).
 				return nil
 			}
diff --git a/centchain/api_test.go b/centchain/api_test.go
index 9003867da..3b44873d5 100644
--- a/centchain/api_test.go
+++ b/centchain/api_test.go
@@ -1107,7 +1107,7 @@ func TestApi_checkExtrinsicEventSuccess_ExtrinsicSuccess_WithProxySuccess(t *tes
 					Value: registry.DecodedFields{
 						{
 							Value:       nil,
-							LookupIndex: ProxyExecutedExpectedLookupIndex,
+							LookupIndex: 41,
 						},
 					},
 					LookupIndex: 0,