diff --git a/src/components/views/auth/InteractiveAuthEntryComponents.js b/src/components/views/auth/InteractiveAuthEntryComponents.js
index eaff2d0543..4541ce15f7 100644
--- a/src/components/views/auth/InteractiveAuthEntryComponents.js
+++ b/src/components/views/auth/InteractiveAuthEntryComponents.js
@@ -195,7 +195,7 @@ export const RecaptchaAuthEntry = createReactClass({
         const CaptchaForm = sdk.getComponent("views.auth.CaptchaForm");
         let sitePublicKey;
         if (!this.props.stageParams || !this.props.stageParams.public_key) {
-            errorText = _t("Missing captcha public key - check your server configuration");
+            errorText = _t("Missing captcha public key in homeserver configuration. Please report this to your homeserver administrator.");
         } else {
             sitePublicKey = this.props.stageParams.public_key;
         }