diff --git a/tensorflow/lite/tools/accuracy/ilsvrc/imagenet_model_evaluator.h b/tensorflow/lite/tools/accuracy/ilsvrc/imagenet_model_evaluator.h
index f21f593a644..25fd092523f 100644
--- a/tensorflow/lite/tools/accuracy/ilsvrc/imagenet_model_evaluator.h
+++ b/tensorflow/lite/tools/accuracy/ilsvrc/imagenet_model_evaluator.h
@@ -99,7 +99,7 @@ class ImagenetModelEvaluator {
     virtual void OnSingleImageEvaluationComplete(
         uint64_t shard_id,
         const tflite::evaluation::TopkAccuracyEvalMetrics& metrics,
-        const string& image) = 0;
+        const std::string& image) = 0;
 
     virtual ~Observer() = default;
   };