diff --git a/config/short-url.php b/config/short-url.php
index bbcf3b9..ba2d0cb 100644
--- a/config/short-url.php
+++ b/config/short-url.php
@@ -107,14 +107,17 @@
 
     /*
     |--------------------------------------------------------------------------
-    | Additional URL Schemes
+    | Allowed URL Schemes
     |--------------------------------------------------------------------------
     |
-    | Here you may specify additional URL schemes to shorten, eg 'mailto://' or
-    | ones for your own app, eg 'whatsapp://', 'yourapp://'
+    | Here you may specify the allowed URL schemes to shorten, eg 'mailto://'
+    | or ones for your own app, eg 'whatsapp://', 'yourapp://'.
     |
     */
-    'additional_url_schemes' => [],
+    'allowed_url_schemes' => [
+        'http://',
+        'https://',
+    ],
 
     /*
     |--------------------------------------------------------------------------
diff --git a/src/Classes/Builder.php b/src/Classes/Builder.php
index c050325..b55df51 100644
--- a/src/Classes/Builder.php
+++ b/src/Classes/Builder.php
@@ -181,11 +181,9 @@ public function routes(): void
      */
     public function destinationUrl(string $url): self
     {
-        $defaultAllowedPrefixes = ['http://', 'https://'];
-        $additionalAllowedPrefixes = config('short-url.additional_url_schemes', []);
-        $allowedPrefixes = array_merge($defaultAllowedPrefixes, $additionalAllowedPrefixes);
+        $allowedPrefixes = config('short-url.allowed_url_schemes');
 
-        if (! Str::startsWith($url, $allowedPrefixes)) {
+        if (! Str::startsWith($url, config('short-url.allowed_url_schemes'))) {
             throw new ShortURLException('The destination URL must begin with an allowed prefix: '.implode(', ', $allowedPrefixes));
         }
 
diff --git a/src/Classes/Validation.php b/src/Classes/Validation.php
index 2219e91..bc9cab5 100644
--- a/src/Classes/Validation.php
+++ b/src/Classes/Validation.php
@@ -32,6 +32,7 @@ public function validateConfig(): bool
                     Rule::make('enforce_https')->rules(['required', 'boolean']),
                     Rule::make('forward_query_params')->rules(['required', 'boolean']),
                     Rule::make('default_url')->rules(['nullable', 'string']),
+                    Rule::make('allowed_url_schemes')->rules(['required', 'array']),
                 ],
             ]);
 
diff --git a/tests/Unit/Classes/BuilderTest.php b/tests/Unit/Classes/BuilderTest.php
index 9cb90c4..5447c33 100644
--- a/tests/Unit/Classes/BuilderTest.php
+++ b/tests/Unit/Classes/BuilderTest.php
@@ -613,7 +613,7 @@ public function builder_works_when_the_date_facade_is_set_to_use_carbon_immutabl
     #[Test]
     public function custom_url_schemes_allowed_if_configured(): void
     {
-        Config::set('short-url.additional_url_schemes', ['whatsapp://']);
+        Config::set('short-url.allowed_url_schemes', ['http://', 'https://', 'whatsapp://']);
 
         $shortUrl = app(Builder::class)
             ->destinationUrl('whatsapp://callMe')
@@ -625,12 +625,12 @@ public function custom_url_schemes_allowed_if_configured(): void
     #[Test]
     public function exception_is_thrown_if_invalid_scheme(): void
     {
-        Config::set('short-url.additional_url_schemes', ['whatsapp://']);
+        Config::set('short-url.allowed_url_schemes', ['https://', 'whatsapp://']);
 
         $this->expectException(ShortURLException::class);
-        $this->expectExceptionMessage('The destination URL must begin with an allowed prefix: http://, https://, whatsapp://');
+        $this->expectExceptionMessage('The destination URL must begin with an allowed prefix: https://, whatsapp://');
 
         $builder = app(Builder::class);
-        $builder->destinationUrl('INVALID');
+        $builder->destinationUrl('phpstorm://');
     }
 }
diff --git a/tests/Unit/Classes/ValidationTest.php b/tests/Unit/Classes/ValidationTest.php
index e44d32b..5070278 100644
--- a/tests/Unit/Classes/ValidationTest.php
+++ b/tests/Unit/Classes/ValidationTest.php
@@ -129,4 +129,16 @@ public function exception_is_thrown_if_the_default_url_is_not_a_string(): void
         $validation = new Validation();
         $validation->validateConfig();
     }
+
+    #[Test]
+    public function exception_is_thrown_if_the_allowed_url_schemes_is_not_an_array(): void
+    {
+        $this->expectException(ValidationException::class);
+        $this->expectExceptionMessage('The short-url.allowed_url_schemes field must be an array.');
+
+        Config::set('short-url.allowed_url_schemes', 'INVALID');
+
+        $validation = new Validation();
+        $validation->validateConfig();
+    }
 }