diff --git a/tv/hdmi/connection/aidl/android/hardware/tv/hdmi/connection/HdmiPortInfo.aidl b/tv/hdmi/connection/aidl/android/hardware/tv/hdmi/connection/HdmiPortInfo.aidl
index c8a10d1..1d2ef4a 100644
--- a/tv/hdmi/connection/aidl/android/hardware/tv/hdmi/connection/HdmiPortInfo.aidl
+++ b/tv/hdmi/connection/aidl/android/hardware/tv/hdmi/connection/HdmiPortInfo.aidl
@@ -24,7 +24,7 @@
 @VintfStability
 parcelable HdmiPortInfo {
     HdmiPortType type;
-    int portId; // Should start from 1 which corresponds to HDMI "port 1".
+    int portId; // Output ports should start from 1 which corresponds to HDMI "port 1".
     boolean cecSupported;
     boolean arcSupported;
     boolean eArcSupported;