diff --git a/telephony/java/com/android/internal/telephony/RILConstants.java b/telephony/java/com/android/internal/telephony/RILConstants.java
index 3a263504a2eca..cb8269efe4433 100644
--- a/telephony/java/com/android/internal/telephony/RILConstants.java
+++ b/telephony/java/com/android/internal/telephony/RILConstants.java
@@ -420,6 +420,7 @@ public interface RILConstants {
     int RIL_REQUEST_SET_LOGICAL_TO_PHYSICAL_SLOT_MAPPING = 201;
     int RIL_REQUEST_SET_SIGNAL_STRENGTH_REPORTING_CRITERIA = 202;
     int RIL_REQUEST_SET_LINK_CAPACITY_REPORTING_CRITERIA = 203;
+    int RIL_REQUEST_SET_PREFERRED_DATA_MODEM = 204;
 
     /* Responses begin */
     int RIL_RESPONSE_ACKNOWLEDGEMENT = 800;