diff --git a/src/Form/Type/SectionType.php b/src/Form/Type/SectionType.php
index 4c4c00d..c25d39e 100644
--- a/src/Form/Type/SectionType.php
+++ b/src/Form/Type/SectionType.php
@@ -81,8 +81,8 @@ public function configureOptions(OptionsResolver $resolver): void
 
                     foreach ($this->cmsConfig->getSites() as $site) {
                         foreach ($this->localeHelper->getEnabledLocales() as $locale) {
-                            $attr['data-section-preview'] .= '<div data-lang="'.$locale.'" data-site="'.$site.'" class="section-preview"'
-                                .' data-preview-url="'.$this->router->generate('sfs_cms_admin_sections_render_preview', ['section' => $section->getId(), '_locale' => $locale, '_sfs_cms_site' => $site]).'"'
+                            $attr['data-section-preview'] .= '<div data-lang="'.$locale.'" data-site="'."$site".'" class="section-preview"'
+                                .' data-preview-url="'.$this->router->generate('sfs_cms_admin_sections_render_preview', ['section' => $section->getId(), '_locale' => $locale, '_sfs_cms_site' => "$site"]).'"'
                                 .'></div>';
                         }
                     }