diff --git a/core/services/ocr2/plugins/ccip/internal/rpclib/evm.go b/core/services/ocr2/plugins/ccip/internal/rpclib/evm.go
index 4debf3c8a4..86ef3517f2 100644
--- a/core/services/ocr2/plugins/ccip/internal/rpclib/evm.go
+++ b/core/services/ocr2/plugins/ccip/internal/rpclib/evm.go
@@ -19,7 +19,7 @@ import (
 //go:generate mockery --quiet --name EvmBatchCaller --output ./rpclibmocks --outpkg rpclibmocks --filename evm_mock.go --case=underscore
 type EvmBatchCaller interface {
 	// BatchCall executes all the provided EvmCall and returns the results in the same order
-	// of the calls.
+	// of the calls. Pass blockNumber=0 to use the latest block.
 	BatchCall(ctx context.Context, blockNumber uint64, calls []EvmCall) ([]DataAndErr, error)
 }