diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0a351706..63748cef 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,17 +11,21 @@
 
 - On Android, the `InAppWebView` widget uses hybrid composition by default (`useHybridComposition: true`).
 
-## 5.4.3+1
+## 5.4.3+2
 
 - Fixed "Latest version 5.4.3 crashes on Android" [#1159](https://github.com/pichillilorenzo/flutter_inappwebview/issues/1159)
 
+## 5.4.3+1
+
+- Try to fix "Latest version 5.4.3 crashes on Android" [#1159](https://github.com/pichillilorenzo/flutter_inappwebview/issues/1159)
+
 ## 5.4.3
 
 - Added Bitwise OR operator support for `AndroidActionModeMenuItem` class
 
 ## 5.4.2+1
 
-- Fixed "Latest version 5.4.2 crashes on Android - HeadlessInAppWebView.dispose" [#1155](https://github.com/pichillilorenzo/flutter_inappwebview/issues/1155)
+- Try to fix "Latest version 5.4.2 crashes on Android - HeadlessInAppWebView.dispose" [#1155](https://github.com/pichillilorenzo/flutter_inappwebview/issues/1155)
 
 ## 5.4.2
 
diff --git a/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/headless_in_app_webview/HeadlessInAppWebViewManager.java b/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/headless_in_app_webview/HeadlessInAppWebViewManager.java
index 787b5c36..ea796641 100755
--- a/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/headless_in_app_webview/HeadlessInAppWebViewManager.java
+++ b/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/headless_in_app_webview/HeadlessInAppWebViewManager.java
@@ -83,7 +83,9 @@ public class HeadlessInAppWebViewManager implements MethodChannel.MethodCallHand
     channel.setMethodCallHandler(null);
     Collection<HeadlessInAppWebView> headlessInAppWebViews = webViews.values();
     for (HeadlessInAppWebView headlessInAppWebView : headlessInAppWebViews) {
-      headlessInAppWebView.dispose();
+      if (headlessInAppWebView != null) {
+        headlessInAppWebView.dispose();
+      }
     }
     webViews.clear();
   }
diff --git a/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_browser/InAppBrowserActivity.java b/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_browser/InAppBrowserActivity.java
index bf18de80..93ac8388 100755
--- a/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_browser/InAppBrowserActivity.java
+++ b/android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_browser/InAppBrowserActivity.java
@@ -55,7 +55,7 @@ public class InAppBrowserActivity extends AppCompatActivity implements InAppBrow
   public ActionBar actionBar;
   public Menu menu;
   public SearchView searchView;
-  public InAppBrowserSettings customSettings;
+  public InAppBrowserSettings customSettings = new InAppBrowserSettings();
   public ProgressBar progressBar;
   public boolean isHidden = false;
   public String fromActivity;
@@ -75,7 +75,10 @@ public class InAppBrowserActivity extends AppCompatActivity implements InAppBrow
     String managerId = b.getString("managerId");
     manager = InAppBrowserManager.shared.get(managerId);
     if (manager == null || manager.plugin == null|| manager.plugin.messenger == null) return;
-    
+
+    Map<String, Object> settingsMap = (Map<String, Object>) b.getSerializable("settings");
+    customSettings.parse(settingsMap);
+
     windowId = b.getInt("windowId");
 
     channel = new MethodChannel(manager.plugin.messenger, "com.pichillilorenzo/flutter_inappbrowser_" + id);
@@ -102,13 +105,9 @@ public class InAppBrowserActivity extends AppCompatActivity implements InAppBrow
 
     fromActivity = b.getString("fromActivity");
 
-    Map<String, Object> settingsMap = (Map<String, Object>) b.getSerializable("settings");
     Map<String, Object> contextMenu = (Map<String, Object>) b.getSerializable("contextMenu");
     List<Map<String, Object>> initialUserScripts = (List<Map<String, Object>>) b.getSerializable("initialUserScripts");
 
-    customSettings = new InAppBrowserSettings();
-    customSettings.parse(settingsMap);
-
     InAppWebViewSettings webViewSettings = new InAppWebViewSettings();
     webViewSettings.parse(settingsMap);
     webView.customSettings = webViewSettings;