fix doc
diff --git a/core/java/android/accounts/Constants.java b/core/java/android/accounts/Constants.java
index 8736f41..c2074b8 100644
--- a/core/java/android/accounts/Constants.java
+++ b/core/java/android/accounts/Constants.java
@@ -52,7 +52,9 @@
/**
* Action sent as a broadcast Intent by the AccountsService
* when accounts are added to and/or removed from the device's
- * database, or when the primary account is changed.
+ * database.
+ * Note: The primary account on the phone can only be changed
+ * after a data wipe.
*/
public static final String LOGIN_ACCOUNTS_CHANGED_ACTION =
"android.accounts.LOGIN_ACCOUNTS_CHANGED";