diff --git a/services/java/com/android/server/KeyInputQueue.java b/services/java/com/android/server/KeyInputQueue.java
index 1bb897b7042e5..e05c800b3e0c5 100644
--- a/services/java/com/android/server/KeyInputQueue.java
+++ b/services/java/com/android/server/KeyInputQueue.java
@@ -299,7 +299,9 @@ public abstract class KeyInputQueue {
         mLast = new QueuedEvent();
         mFirst.next = mLast;
         mLast.prev = mFirst;
+    }
 
+    void start() {
         mThread.start();
     }
 
diff --git a/services/java/com/android/server/WindowManagerService.java b/services/java/com/android/server/WindowManagerService.java
index b90b03bea7032..4bad5b486321b 100644
--- a/services/java/com/android/server/WindowManagerService.java
+++ b/services/java/com/android/server/WindowManagerService.java
@@ -621,6 +621,7 @@ public class WindowManagerService extends IWindowManager.Stub
         }
 
         mInputThread.start();
+        mQueue.start();
 
         // Add ourself to the Watchdog monitors.
         Watchdog.getInstance().addMonitor(this);