diff --git a/telephony/java/com/android/internal/telephony/DctConstants.java b/telephony/java/com/android/internal/telephony/DctConstants.java
index 59bdf64d1d2b5..874279b4b09bb 100644
--- a/telephony/java/com/android/internal/telephony/DctConstants.java
+++ b/telephony/java/com/android/internal/telephony/DctConstants.java
@@ -98,6 +98,7 @@ public class DctConstants {
     public static final int CMD_IS_PROVISIONING_APN = BASE + 38;
     public static final int EVENT_PROVISIONING_APN_ALARM = BASE + 39;
     public static final int CMD_NET_STAT_POLL = BASE + 40;
+    public static final int EVENT_DATA_RAT_CHANGED = BASE + 41;
 
     /***** Constants *****/