diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index b53897d293f5c..13ed68f56cebe 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -388,6 +388,9 @@ public class TelephonyManager {
     /** @hide */
     public static final int INVALID_PORT_INDEX = -1;
 
+    /** @hide */
+    public static final String PROPERTY_ENABLE_NULL_CIPHER_TOGGLE = "enable_null_cipher_toggle";
+
     private final Context mContext;
     private final int mSubId;
     @UnsupportedAppUsage