diff --git a/core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationUrl.php b/core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationUrl.php
index ded74f2..7100004 100644
--- a/core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationUrl.php
+++ b/core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationUrl.php
@@ -105,6 +105,12 @@ public function getLangcode(Request $request = NULL) {
    */
   public function reactSelectedLanguage(LanguageInterface $selected_language) {
     $request = \Drupal::request();
+
+    // Do not redirect if one of the url prefixes is empty.
+    if (in_array('', language_negotiation_url_prefixes())) {
+      return FALSE;
+    }
+
     // \Drupal::urlGenerator() will run processOutbound() which will
     // adapt the URL with the url negotiation from the selected language.
     $options = array('language' => $selected_language, 'query' => $request->query->all());