diff --git a/core/misc/ajax.js b/core/misc/ajax.js
index b63bc03..bea0af7 100644
--- a/core/misc/ajax.js
+++ b/core/misc/ajax.js
@@ -439,6 +439,11 @@
 
     // Bind the ajaxSubmit function to the element event.
     $(ajax.element).on(element_settings.event, function (event) {
+      // Prevent the Ajax command from being triggered when a mouse button
+      // other than the left button is clicked.
+      if (event.type === 'mousedown' && event.which !== 1) {
+        return;
+      }
       if (!drupalSettings.ajaxTrustedUrl[ajax.url] && !Drupal.url.isLocal(ajax.url)) {
         throw new Error(Drupal.t('The callback URL is not local and not trusted: !url', {'!url': ajax.url}));
       }