diff --git a/tensorflow/core/util/stat_summarizer.h b/tensorflow/core/util/stat_summarizer.h
index 775c8e54e9b..2dd3dbd5cd4 100644
--- a/tensorflow/core/util/stat_summarizer.h
+++ b/tensorflow/core/util/stat_summarizer.h
@@ -176,7 +176,7 @@ class StatSummarizer {
     std::vector<TensorDescription> outputs;
   };
 
-  enum struct SortingMetric {
+  enum SortingMetric {
     BY_TOTAL,
     BY_RUN_ORDER,
   };