diff --git a/cmd/evm/json_logger.go b/cmd/evm/json_logger.go
index b64c98da4a..f16424fbe6 100644
--- a/cmd/evm/json_logger.go
+++ b/cmd/evm/json_logger.go
@@ -32,7 +32,8 @@ type JSONLogger struct {
 	cfg     *vm.LogConfig
 }
 
-// NewJSONLogger assigns values to JSONLogger struct.
+// NewJSONLogger creates a new EVM tracer that prints execution steps as JSON objects
+// into the provided stream.
 func NewJSONLogger(cfg *vm.LogConfig, writer io.Writer) *JSONLogger {
 	return &JSONLogger{json.NewEncoder(writer), cfg}
 }