diff --git a/src/core/lib/channel/call_tracer.h b/src/core/lib/channel/call_tracer.h
index e821cfcb5f8..78fd7fbb369 100644
--- a/src/core/lib/channel/call_tracer.h
+++ b/src/core/lib/channel/call_tracer.h
@@ -44,9 +44,9 @@ namespace grpc_core {
 
 // The interface hierarchy is as follows -
 //                 CallTracerAnnotationInterface
-//                      /          \
+//                    |                  |
 //        ClientCallTracer       CallTracerInterface
-//                                /             \
+//                                |              |
 //                      CallAttemptTracer    ServerCallTracer
 
 // The base class for all tracer implementations.