diff --git a/java/src/com/android/inputmethod/latin/personalization/PersonalizationDictionaryUpdateSession.java b/java/src/com/android/inputmethod/latin/personalization/PersonalizationDictionaryUpdateSession.java
index 61354762b..3eb8f35a9 100644
--- a/java/src/com/android/inputmethod/latin/personalization/PersonalizationDictionaryUpdateSession.java
+++ b/java/src/com/android/inputmethod/latin/personalization/PersonalizationDictionaryUpdateSession.java
@@ -57,7 +57,7 @@ public abstract class PersonalizationDictionaryUpdateSession {
         dictionary.unRegisterUpdateSession(this);
     }
 
-    public void clearAndFlushDictionary(final Context context) {
+    public void clearAndFlushDictionary() {
         final PersonalizationDictionary dictionary = getDictionary();
         if (dictionary == null) {
             return;
diff --git a/java/src/com/android/inputmethod/latin/settings/Settings.java b/java/src/com/android/inputmethod/latin/settings/Settings.java
index 323e612b3..7db10714a 100644
--- a/java/src/com/android/inputmethod/latin/settings/Settings.java
+++ b/java/src/com/android/inputmethod/latin/settings/Settings.java
@@ -31,7 +31,9 @@ import com.android.inputmethod.latin.utils.ResourceUtils;
 import com.android.inputmethod.latin.utils.RunInLocale;
 import com.android.inputmethod.latin.utils.StringUtils;
 
+import java.util.Collections;
 import java.util.Locale;
+import java.util.Set;
 import java.util.concurrent.locks.ReentrantLock;
 
 public final class Settings implements SharedPreferences.OnSharedPreferenceChangeListener {
@@ -95,6 +97,8 @@ public final class Settings implements SharedPreferences.OnSharedPreferenceChang
             "pref_last_used_personalization_token";
     private static final String PREF_LAST_PERSONALIZATION_DICT_WIPED_TIME =
             "pref_last_used_personalization_dict_wiped_time";
+    private static final String PREF_CORPUS_HANDLES_FOR_PERSONALIZATION =
+            "pref_corpus_handles_for_personalization";
     public static final String PREF_SEND_FEEDBACK = "send_feedback";
     public static final String PREF_ABOUT_KEYBOARD = "about_keyboard";
 
@@ -382,6 +386,15 @@ public final class Settings implements SharedPreferences.OnSharedPreferenceChang
         return mPrefs.getLong(PREF_LAST_PERSONALIZATION_DICT_WIPED_TIME, 0);
     }
 
+    public void writeCorpusHandlesForPersonalization(final Set<String> corpusHandles) {
+        mPrefs.edit().putStringSet(PREF_CORPUS_HANDLES_FOR_PERSONALIZATION, corpusHandles).apply();
+    }
+
+    public Set<String> readCorpusHandlesForPersonalization() {
+        final Set<String> emptySet = Collections.emptySet();
+        return mPrefs.getStringSet(PREF_CORPUS_HANDLES_FOR_PERSONALIZATION, emptySet);
+    }
+
     public static void writeEmojiRecentKeys(final SharedPreferences prefs, String str) {
         prefs.edit().putString(PREF_EMOJI_RECENT_KEYS, str).apply();
     }