diff --git a/lineage/res/res/values/config.xml b/lineage/res/res/values/config.xml
index fbacf117..c0380664 100644
--- a/lineage/res/res/values/config.xml
+++ b/lineage/res/res/values/config.xml
@@ -236,4 +236,8 @@
     <!-- Indicates that the device has Single-stage Camera key
          (without "Focus" state) instead of Dual-stage. -->
     <bool name="config_singleStageCameraKey">false</bool>
+
+    <!-- Timeout in MS for how long you have to long-press the back key to
+         kill the foreground app. -->
+    <integer name="config_backKillTimeout">2000</integer>
 </resources>
diff --git a/lineage/res/res/values/strings.xml b/lineage/res/res/values/strings.xml
index f93db964..4242a838 100644
--- a/lineage/res/res/values/strings.xml
+++ b/lineage/res/res/values/strings.xml
@@ -205,4 +205,7 @@
 
     <!-- General purpose use "unknown" string -->
     <string name="unknown">Unknown</string>
+
+    <!-- Long-press back kill application -->
+    <string name="app_killed_message">Application killed</string>
 </resources>
diff --git a/lineage/res/res/values/symbols.xml b/lineage/res/res/values/symbols.xml
index ece15dfb..5b8f9e63 100644
--- a/lineage/res/res/values/symbols.xml
+++ b/lineage/res/res/values/symbols.xml
@@ -147,4 +147,8 @@
     <!-- Last app switch animations -->
     <java-symbol type="anim" name="last_app_in" />
     <java-symbol type="anim" name="last_app_out" />
+
+    <!-- Back kill -->
+    <java-symbol type="string" name="app_killed_message" />
+    <java-symbol type="integer" name="config_backKillTimeout" />
 </resources>