diff --git a/src/components/views/auth/CaptchaForm.js b/src/components/views/auth/CaptchaForm.js
index efcc450067..1b9dd3a97d 100644
--- a/src/components/views/auth/CaptchaForm.js
+++ b/src/components/views/auth/CaptchaForm.js
@@ -61,13 +61,9 @@ export default createReactClass({
         } else {
             console.log("Loading recaptcha script...");
             window.mx_on_recaptcha_loaded = () => {this._onCaptchaLoaded();};
-            let protocol = global.location.protocol;
-            if (protocol !== "http:") {
-                protocol = "https:";
-            }
             const scriptTag = document.createElement('script');
             scriptTag.setAttribute(
-                'src', `${protocol}//www.recaptcha.net/recaptcha/api.js?onload=mx_on_recaptcha_loaded&render=explicit`,
+                'src', `https://www.recaptcha.net/recaptcha/api.js?onload=mx_on_recaptcha_loaded&render=explicit`,
             );
             this._recaptchaContainer.current.appendChild(scriptTag);
         }