diff --git a/java/res/values/strings.xml b/java/res/values/strings.xml
index f4d072dd5..f618473bd 100644
--- a/java/res/values/strings.xml
+++ b/java/res/values/strings.xml
@@ -484,8 +484,6 @@ mobile devices. [CHAR LIMIT=25] -->
     <string name="prefs_read_external_dictionary">Read external dictionary file</string>
     <!-- Title of the settings for using only personalization dictionary -->
     <string name="prefs_use_only_personalization_dictionary" translatable="false">Use only personalization dictionary</string>
-    <!-- Title of the settings for boosting personalization dictionary -->
-    <string name="prefs_boost_personalization_dictionary" translatable="false">Boost personalization dictionary</string>
     <!-- Message to show when there are no files to install as an external dictionary [CHAR LIMIT=100] -->
     <string name="read_external_dictionary_no_files_message">No dictionary files in the Downloads folder</string>
     <!-- Title of the dialog that selects a file to install as an external dictionary [CHAR LIMIT=50] -->
diff --git a/java/res/xml/prefs_for_debug.xml b/java/res/xml/prefs_for_debug.xml
index 124c44388..8d9508e38 100644
--- a/java/res/xml/prefs_for_debug.xml
+++ b/java/res/xml/prefs_for_debug.xml
@@ -58,12 +58,6 @@
         android:persistent="true"
         android:title="@string/prefs_use_only_personalization_dictionary" />
 
-    <CheckBoxPreference
-        android:defaultValue="false"
-        android:key="boost_personalization_dictionary_for_debug"
-        android:persistent="true"
-        android:title="@string/prefs_boost_personalization_dictionary" />
-
     <PreferenceScreen
         android:key="read_external_dictionary"
         android:title="@string/prefs_read_external_dictionary" />
diff --git a/java/src/com/android/inputmethod/latin/settings/DebugSettings.java b/java/src/com/android/inputmethod/latin/settings/DebugSettings.java
index d060485bd..29bbed8bd 100644
--- a/java/src/com/android/inputmethod/latin/settings/DebugSettings.java
+++ b/java/src/com/android/inputmethod/latin/settings/DebugSettings.java
@@ -39,8 +39,6 @@ public final class DebugSettings extends PreferenceFragment
     public static final String PREF_STATISTICS_LOGGING = "enable_logging";
     public static final String PREF_USE_ONLY_PERSONALIZATION_DICTIONARY_FOR_DEBUG =
             "use_only_personalization_dictionary_for_debug";
-    public static final String PREF_BOOST_PERSONALIZATION_DICTIONARY_FOR_DEBUG =
-            "boost_personalization_dictionary_for_debug";
     private static final String PREF_READ_EXTERNAL_DICTIONARY = "read_external_dictionary";
     private static final boolean SHOW_STATISTICS_LOGGING = false;