diff --git a/tensorflow/core/graph/mkl_graph_util.h b/tensorflow/core/graph/mkl_graph_util.h
index 6b55782d14d..d95afdf5e72 100644
--- a/tensorflow/core/graph/mkl_graph_util.h
+++ b/tensorflow/core/graph/mkl_graph_util.h
@@ -146,7 +146,7 @@ static inline bool IsMklLayoutDependentOp(const string& op_name, DataType T) {
   if (kernel.find(kMklLayoutDependentOpLabelPattern) != string::npos) {
     return (T == DT_FLOAT);
   }
-#endif
+#endif  // ENABLE_INTEL_MKL_BFLOAT16
   return false;
 }