diff --git a/CHANGELOG.md b/CHANGELOG.md
index 58e8dfb3..7914bbaa 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,10 @@
 
 - On Android, the `InAppWebView` widget uses hybrid composition by default (`useHybridComposition: true`).
 
+## 5.4.3+4
+
+- Updated docs for `ChromeSafariBrowser.open` and throw error on iOS if the `url` parameter use a different scheme then `http` or `https`
+
 ## 5.4.3+3
 
 - Fixed "Android error: package org.jetbrains.annotations does not exist import org.jetbrains.annotations.NotNull;" [#1166](https://github.com/pichillilorenzo/flutter_inappwebview/issues/1166)
diff --git a/lib/src/chrome_safari_browser/chrome_safari_browser.dart b/lib/src/chrome_safari_browser/chrome_safari_browser.dart
index 5589c292..ffeffdd7 100755
--- a/lib/src/chrome_safari_browser/chrome_safari_browser.dart
+++ b/lib/src/chrome_safari_browser/chrome_safari_browser.dart
@@ -110,7 +110,7 @@ class ChromeSafariBrowser {
 
   ///Opens the [ChromeSafariBrowser] instance with an [url].
   ///
-  ///[url]: The [url] to load.
+  ///[url]: The [url] to load. On iOS, the [url] must use the `http` or `https` scheme.
   ///
   ///[options]: Options for the [ChromeSafariBrowser].
   ///
@@ -123,6 +123,10 @@ class ChromeSafariBrowser {
       ChromeSafariBrowserSettings? settings}) async {
     assert(url.toString().isNotEmpty);
     this.throwIsAlreadyOpened(message: 'Cannot open $url!');
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.iOS) {
+      assert(['http', 'https'].contains(url.scheme),
+          'The specified URL has an unsupported scheme. Only HTTP and HTTPS URLs are supported on iOS.');
+    }
 
     List<Map<String, dynamic>> menuItemList = [];
     _menuItems.forEach((key, value) {