diff --git a/apct-tests/perftests/multiuser/src/android/multiuser/BenchmarkRunner.java b/apct-tests/perftests/multiuser/src/android/multiuser/BenchmarkRunner.java
index a9f720ac2ba04..515ddc8d1d490 100644
--- a/apct-tests/perftests/multiuser/src/android/multiuser/BenchmarkRunner.java
+++ b/apct-tests/perftests/multiuser/src/android/multiuser/BenchmarkRunner.java
@@ -80,7 +80,7 @@ public class BenchmarkRunner {
 
     private void prepareForNextRun() {
         SystemClock.sleep(COOL_OFF_PERIOD_MS);
-        ShellHelper.runShellCommand("am wait-for-broadcast-idle");
+        ShellHelper.runShellCommand("am wait-for-broadcast-idle --flush-broadcast-loopers");
         mStartTimeNs = System.nanoTime();
         mPausedDurationNs = 0;
     }
@@ -102,7 +102,7 @@ public class BenchmarkRunner {
      * to avoid unnecessary waiting.
      */
     public void resumeTiming() {
-        ShellHelper.runShellCommand("am wait-for-broadcast-idle");
+        ShellHelper.runShellCommand("am wait-for-broadcast-idle --flush-broadcast-loopers");
         resumeTimer();
     }
 
diff --git a/apct-tests/perftests/multiuser/src/android/multiuser/UserLifecycleTests.java b/apct-tests/perftests/multiuser/src/android/multiuser/UserLifecycleTests.java
index 19a47669b0dd6..6dba5b3517f72 100644
--- a/apct-tests/perftests/multiuser/src/android/multiuser/UserLifecycleTests.java
+++ b/apct-tests/perftests/multiuser/src/android/multiuser/UserLifecycleTests.java
@@ -1541,7 +1541,8 @@ public class UserLifecycleTests {
 
     private void waitForBroadcastIdle() {
         try {
-            ShellHelper.runShellCommandWithTimeout("am wait-for-broadcast-idle", TIMEOUT_IN_SECOND);
+            ShellHelper.runShellCommandWithTimeout(
+                    "am wait-for-broadcast-idle --flush-broadcast-loopers", TIMEOUT_IN_SECOND);
         } catch (TimeoutException e) {
             Log.e(TAG, "Ending waitForBroadcastIdle because it is taking too long", e);
         }