diff --git a/core/modules/rest/src/Plugin/views/display/RestExport.php b/core/modules/rest/src/Plugin/views/display/RestExport.php
index 00f5ce4..a0ef1e7 100644
--- a/core/modules/rest/src/Plugin/views/display/RestExport.php
+++ b/core/modules/rest/src/Plugin/views/display/RestExport.php
@@ -115,10 +115,10 @@ public function initDisplay(ViewExecutable $view, array &$display, array &$optio
     if ($request_content_type != 'html') {
       $this->setContentType($request_content_type);
     }
-    // If the requested content-type is 'html' and we only have 1 format option
-    // selected in the view display options, set that as the default content
-    // type.
-    elseif (isset($options['style']['options']['formats']) && count($options['style']['options']['formats']) == 1) {
+    // If the requested content type is 'html' and the default 'json' is not
+    // selected as a format option in the view display, fallback to the first
+    // format in the array.
+    elseif (!empty($options['style']['options']['formats']) && !isset($options['style']['options']['formats'][$this->getContentType()])) {
       $this->setContentType(reset($options['style']['options']['formats']));
     }