diff --git a/app/Models/ApplicationPreview.php b/app/Models/ApplicationPreview.php
index f67497bf34..4a0f6d78f0 100644
--- a/app/Models/ApplicationPreview.php
+++ b/app/Models/ApplicationPreview.php
@@ -337,6 +337,10 @@ class ApplicationPreview extends BaseModel
         $previewFqdn = str_replace('{{random}}', $random, $template);
         $previewFqdn = str_replace('{{domain}}', $host, $previewFqdn);
         $previewFqdn = str_replace('{{pr_id}}', (string) $this->pull_request_id, $previewFqdn);
+        if (preg_match('#^(https?)://(.*)$#i', $previewFqdn, $matches)) {
+            $schema = strtolower($matches[1]);
+            $previewFqdn = $matches[2];
+        }
         $previewUrl = "{$schema}://{$previewFqdn}{$path}";
         $sourceCanonical = DomainPortOverrides::withoutPort($sourceDomain);
         $port = $url->getPort() ?? ($this->application->domain_port_overrides[$sourceCanonical] ?? null);
diff --git a/tests/Feature/PreviewDomainPortOverridesTest.php b/tests/Feature/PreviewDomainPortOverridesTest.php
index db78ef95ca..e81738f6ac 100644
--- a/tests/Feature/PreviewDomainPortOverridesTest.php
+++ b/tests/Feature/PreviewDomainPortOverridesTest.php
@@ -394,6 +394,18 @@ it('copies the parent domain port override onto a generated preview domain', fun
         ->toBe([8080]);
 });
 
+it('uses the preview url template scheme instead of the parent scheme', function (string $template, string $expected) {
+    $this->application->update(['preview_url_template' => $template]);
+
+    $preview = createPreviewForPortTests($this->application, 2163);
+
+    expect($preview->generatedPreviewDomain('http://app.example.com/api')['url'])->toBe($expected);
+})->with([
+    'explicit https' => ['https://{{pr_id}}.preview.example.com', 'https://2163.preview.example.com/api'],
+    'explicit uppercase https' => ['HTTPS://{{pr_id}}.preview.example.com', 'https://2163.preview.example.com/api'],
+    'scheme-less inherits parent' => ['{{pr_id}}.preview.example.com', 'http://2163.preview.example.com/api'],
+]);
+
 it('keeps every generated preview domain port override in the legacy compose parser', function () {
     $this->application->update([
         'build_pack' => 'dockercompose',