diff --git a/telephony/java/android/telephony/SubscriptionManager.java b/telephony/java/android/telephony/SubscriptionManager.java
index dfe35cdf35687..1043ff3e591a5 100644
--- a/telephony/java/android/telephony/SubscriptionManager.java
+++ b/telephony/java/android/telephony/SubscriptionManager.java
@@ -1341,6 +1341,7 @@ public class SubscriptionManager {
      * @param slotIndex the slot Index.
      * @return subscription Ids or null if the given slot Index is not valid.
      */
+    @Nullable
     public static int[] getSubscriptionIds(int slotIndex) {
         return getSubId(slotIndex);
     }