diff --git a/sdk/android/api/org/webrtc/NetworkMonitor.java b/sdk/android/api/org/webrtc/NetworkMonitor.java
index 0bc461df18..ca7e4d5656 100644
--- a/sdk/android/api/org/webrtc/NetworkMonitor.java
+++ b/sdk/android/api/org/webrtc/NetworkMonitor.java
@@ -227,10 +227,13 @@ public class NetworkMonitor {
   /** Alerts all observers of a connection change. */
   private void notifyObserversOfConnectionTypeChange(
       NetworkChangeDetector.ConnectionType newConnectionType) {
-    List<Long> nativeObservers = getNativeNetworkObserversSync();
-    for (Long nativeObserver : nativeObservers) {
-      nativeNotifyConnectionTypeChanged(nativeObserver);
+
+    synchronized (nativeNetworkObservers) {
+      for (Long nativeObserver : nativeNetworkObservers) {
+        nativeNotifyConnectionTypeChanged(nativeObserver);
+      }
     }
+
     // This avoids calling external methods while locking on an object.
     List<NetworkObserver> javaObservers;
     synchronized (networkObservers) {
@@ -243,25 +246,28 @@ public class NetworkMonitor {
 
   private void notifyObserversOfNetworkConnect(
       NetworkChangeDetector.NetworkInformation networkInfo) {
-    List<Long> nativeObservers = getNativeNetworkObserversSync();
-    for (Long nativeObserver : nativeObservers) {
-      nativeNotifyOfNetworkConnect(nativeObserver, networkInfo);
+    synchronized (nativeNetworkObservers) {
+      for (Long nativeObserver : nativeNetworkObservers) {
+        nativeNotifyOfNetworkConnect(nativeObserver, networkInfo);
+      }
     }
   }
 
   private void notifyObserversOfNetworkDisconnect(long networkHandle) {
-    List<Long> nativeObservers = getNativeNetworkObserversSync();
-    for (Long nativeObserver : nativeObservers) {
-      nativeNotifyOfNetworkDisconnect(nativeObserver, networkHandle);
+    synchronized (nativeNetworkObservers) {
+      for (Long nativeObserver : nativeNetworkObservers) {
+        nativeNotifyOfNetworkDisconnect(nativeObserver, networkHandle);
+      }
     }
   }
 
   private void notifyObserversOfNetworkPreference(
       List<NetworkChangeDetector.ConnectionType> types, int preference) {
-    List<Long> nativeObservers = getNativeNetworkObserversSync();
-    for (NetworkChangeDetector.ConnectionType type : types) {
-      for (Long nativeObserver : nativeObservers) {
-        nativeNotifyOfNetworkPreference(nativeObserver, type, preference);
+    synchronized(nativeNetworkObservers) {
+      for (NetworkChangeDetector.ConnectionType type : types) {
+        for (Long nativeObserver : nativeNetworkObservers) {
+          nativeNotifyOfNetworkPreference(nativeObserver, type, preference);
+        }
       }
     }
   }
@@ -282,12 +288,6 @@ public class NetworkMonitor {
     nativeNotifyOfActiveNetworkList(nativeObserver, networkInfos);
   }
 
-  private List<Long> getNativeNetworkObserversSync() {
-    synchronized (nativeNetworkObservers) {
-      return new ArrayList<>(nativeNetworkObservers);
-    }
-  }
-
   /**
    * Adds an observer for any connection type changes.
    *