diff --git a/services/core/java/com/android/server/FgThread.java b/services/core/java/com/android/server/FgThread.java
index 5f85cba..18fb477 100644
--- a/services/core/java/com/android/server/FgThread.java
+++ b/services/core/java/com/android/server/FgThread.java
@@ -45,14 +45,14 @@
     }
 
     public static FgThread get() {
-        synchronized (UiThread.class) {
+        synchronized (FgThread.class) {
             ensureThreadLocked();
             return sInstance;
         }
     }
 
     public static Handler getHandler() {
-        synchronized (UiThread.class) {
+        synchronized (FgThread.class) {
             ensureThreadLocked();
             return sHandler;
         }