diff --git a/tensorflow/lite/tools/optimize/operator_property.h b/tensorflow/lite/tools/optimize/operator_property.h
index 98b09a71c99..1088842a51a 100644
--- a/tensorflow/lite/tools/optimize/operator_property.h
+++ b/tensorflow/lite/tools/optimize/operator_property.h
@@ -110,7 +110,8 @@ struct OperatorProperty {
 
   // Use same min of min and max of max for each group.
   // Incompatible with restrict_same_input_output_scale and restricted_value.
-  // TODO(jianlijianli): make it compatible with other restrictions when there
+  // Currently it only supports scale pair of {input_index, output_index}.
+  // TODO(b/174534943): make it compatible with other restrictions when there
   // is a use case.
   std::vector<std::vector<int>> restrict_scale = {};
 
diff --git a/tensorflow/lite/tools/optimize/quantize_model.cc b/tensorflow/lite/tools/optimize/quantize_model.cc
index cead574a275..713bafdc441 100644
--- a/tensorflow/lite/tools/optimize/quantize_model.cc
+++ b/tensorflow/lite/tools/optimize/quantize_model.cc
@@ -890,7 +890,7 @@ TfLiteStatus QuantizeSharedRange(ModelT* model, ErrorReporter* error_reporter) {
             continue;
           }
           // Currently only support pair of twos.
-          // TODO(jianlijianli): extend to arbitrary number of tensors.
+          // TODO(b/174534943): extend to arbitrary number of tensors.
           if (input.size() != 2) {
             return kTfLiteError;
           }