diff --git a/services/core/java/com/android/server/audio/PlaybackActivityMonitor.java b/services/core/java/com/android/server/audio/PlaybackActivityMonitor.java
index af9a14ec80cd5..a13b2eb344d93 100644
--- a/services/core/java/com/android/server/audio/PlaybackActivityMonitor.java
+++ b/services/core/java/com/android/server/audio/PlaybackActivityMonitor.java
@@ -380,10 +380,12 @@ public final class PlaybackActivityMonitor
     }
 
     /**
-     * Return all cached capture policies.
+     * Return a copy of all cached capture policies.
      */
     public HashMap<Integer, Integer> getAllAllowedCapturePolicies() {
-        return mAllowedCapturePolicies;
+        synchronized (mAllowedCapturePolicies) {
+            return (HashMap<Integer, Integer>) mAllowedCapturePolicies.clone();
+        }
     }
 
     private void updateAllowedCapturePolicy(AudioPlaybackConfiguration apc, int capturePolicy) {