diff --git a/mediapipe/framework/calculator_profile.proto b/mediapipe/framework/calculator_profile.proto
index 082d0a869..d86162ea5 100644
--- a/mediapipe/framework/calculator_profile.proto
+++ b/mediapipe/framework/calculator_profile.proto
@@ -137,9 +137,6 @@ message GraphTrace {
     TPU_TASK_INVOKE = 17;
     CPU_TASK_INVOKE = 18;
   }
-  //  //depot/mediapipe/framework/mediapipe_profiling.h:profiler_census_tags,
-  //  //depot/mediapipe/framework/profiler/trace_buffer.h:event_type_list,
-  // )
 
   // The timing for one packet set being processed at one caclulator node.
   message CalculatorTrace {
diff --git a/mediapipe/framework/profiler/trace_buffer.h b/mediapipe/framework/profiler/trace_buffer.h
index 9ad4314fd..b44d8f0bf 100644
--- a/mediapipe/framework/profiler/trace_buffer.h
+++ b/mediapipe/framework/profiler/trace_buffer.h
@@ -112,10 +112,6 @@ struct TraceEvent {
   static constexpr EventType GPU_TASK_INVOKE = GraphTrace::GPU_TASK_INVOKE;
   static constexpr EventType TPU_TASK_INVOKE = GraphTrace::TPU_TASK_INVOKE;
   static constexpr EventType CPU_TASK_INVOKE = GraphTrace::CPU_TASK_INVOKE;
-
-  //  //depot/mediapipe/framework/mediapipe_profiling.h:profiler_census_tags,
-  //  //depot/mediapipe/framework/calculator_profile.proto:event_type,
-  // )
 };
 
 // Packet trace log buffer.
diff --git a/mediapipe/tasks/cc/metadata/metadata_version.cc b/mediapipe/tasks/cc/metadata/metadata_version.cc
index e836eb7ec..923d3aa56 100644
--- a/mediapipe/tasks/cc/metadata/metadata_version.cc
+++ b/mediapipe/tasks/cc/metadata/metadata_version.cc
@@ -285,7 +285,7 @@ void UpdateMinimumVersionForTable<tflite::SubGraphMetadata>(
         min_version);
   }
 
-  // Checks for the options field.
+  // Checks for the custom metadata field.
   if (table->custom_metadata() != nullptr) {
     UpdateMinimumVersion(GetMemberVersion(SchemaMembers::kCustomMetadata),
                          min_version);
diff --git a/mediapipe/tasks/metadata/metadata_schema.fbs b/mediapipe/tasks/metadata/metadata_schema.fbs
index 56161b711..3253e1ea8 100644
--- a/mediapipe/tasks/metadata/metadata_schema.fbs
+++ b/mediapipe/tasks/metadata/metadata_schema.fbs
@@ -680,6 +680,8 @@ table SubGraphMetadata {
   // Added in: 1.2.0
   output_tensor_groups:[TensorGroup];
 
+  // A list of custom metadata.
+  // Added in: 1.5.0.
   custom_metadata:[CustomMetadata];
 }
 
@@ -726,6 +728,5 @@ table ModelMetadata {
   // the metadata is populated into a TFLite model.
   min_parser_version:string;
 }
-//     metadata_version.cc)
 
 root_type ModelMetadata;