diff --git a/pool/app/message_template/message_template.ml b/pool/app/message_template/message_template.ml
index eff4824fc..88c70b4fa 100644
--- a/pool/app/message_template/message_template.ml
+++ b/pool/app/message_template/message_template.ml
@@ -136,7 +136,7 @@ let public_experiment_params layout experiment =
     |> Public.online_experiment
     |> function
     | Some online ->
-      [ "experumentSurveyRedirectUrl", experiment_url ^ "/start"
+      [ "experimentSurveyRedirectUrl", experiment_url ^ "/start"
       ; "experimentSurveyUrl", SurveyUrl.value online.survey_url
       ]
     | None -> []
diff --git a/pool/app/pool_common/entity_i18n.ml b/pool/app/pool_common/entity_i18n.ml
index a508effdf..b146ad3c8 100644
--- a/pool/app/pool_common/entity_i18n.ml
+++ b/pool/app/pool_common/entity_i18n.ml
@@ -212,7 +212,7 @@ type hint =
   | ExperimentStatisticsRegistrationPossible
   | ExperimentStatisticsSendingInvitations
   | ExperimentWaitingList
-  | ExperumentSurveyRedirectUrl
+  | ExperimentSurveyRedirectUrl
   | ExperimentSurveyUrl
   | ExternalDataRequired
   | FileUploadAcceptMime of string list
diff --git a/pool/app/pool_common/locales/i18n_de.ml b/pool/app/pool_common/locales/i18n_de.ml
index 43e80036a..9dcfbf8dc 100644
--- a/pool/app/pool_common/locales/i18n_de.ml
+++ b/pool/app/pool_common/locales/i18n_de.ml
@@ -405,7 +405,7 @@ Scheduled: Es läuft kein Mailing, aber zukünftige Mailings sind geplant|}
     "Kontakte, die zu diesem Experiment eingeladen wurden, und sich auf die \
      Warteliste gesetzt haben. Sie müssen manuell einer Session zugewiesen \
      werden."
-  | ExperumentSurveyRedirectUrl ->
+  | ExperimentSurveyRedirectUrl ->
     "<strong>Nur für Online-Umfragen verwenden.</strong> Diese URL erstellt \
      eine Anmeldung zum Experiment und leitet den Kontakt direkt auf die URL \
      der Onlineumfrage weiter. Alternativ kann {experimentUrl} verwendet \
@@ -416,7 +416,8 @@ Scheduled: Es läuft kein Mailing, aber zukünftige Mailings sind geplant|}
      Onlineumfrage. Wird die URL der Umfrage in der Einladung verschickt, \
      können eingeladene Kontakte diese starten, ohne dass eine Anmeldung \
      erstellt wird. Sie können im Pool nicht einsehen, wer an der Umfrage \
-     teilgenommen hat."
+     teilgenommen hat.<br/>Dynamische URL Parameter, wie die \
+     <code>callbackUrl</code>, werden nicht mit effektiven Werten ersetzt."
   | ExternalDataRequired ->
     "Pro Anmeldung ist ein Identifikator für externe Daten obligatorisch \
      (spätestens wenn eine Session abgeschlossen wird)."
diff --git a/pool/app/pool_common/locales/i18n_en.ml b/pool/app/pool_common/locales/i18n_en.ml
index 54ebb7429..3864d5e7b 100644
--- a/pool/app/pool_common/locales/i18n_en.ml
+++ b/pool/app/pool_common/locales/i18n_en.ml
@@ -398,7 +398,7 @@ Scheduled: No mailing is running, but future mailings are scheduled.|}
     "Contacts that have been invited to this experiment and have placed \
      themselves on the waiting list. They have to be manually assigned to a \
      session."
-  | ExperumentSurveyRedirectUrl ->
+  | ExperimentSurveyRedirectUrl ->
     "<strong>Use for online surveys only.</strong> This URL creates an \
      assignment for the experiment and forwards the contact directly to the \
      URL of the online survey. Alternatively, {experimentUrl} can be used, \
@@ -408,7 +408,9 @@ Scheduled: No mailing is running, but future mailings are scheduled.|}
     "<strong>Use for online surveys only.</strong> The external URL of the \
      online survey. If the URL of the survey is sent in the invitation, \
      invited contacts can start it without creating an assignment. You cannot \
-     see who participated in the survey in the assignment overview."
+     see who participated in the survey in the assignment \
+     overview.<br/>Dynamic URL parameters in your survey URL, like the \
+     <code>callbackUrl</code>, will not be replaced by actual values."
   | ExternalDataRequired ->
     "An external data identifier is required for every assignement (latest \
      when a session is closed)."
diff --git a/pool/web/view/component/component_message_text_elements.ml b/pool/web/view/component/component_message_text_elements.ml
index acbc5f375..6f96f7a4a 100644
--- a/pool/web/view/component/component_message_text_elements.ml
+++ b/pool/web/view/component/component_message_text_elements.ml
@@ -6,7 +6,7 @@ let message_template_hints =
   let open Pool_common.I18n in
   function
   | ExperimentInvitation ->
-    [ "experumentSurveyRedirectUrl", ExperumentSurveyRedirectUrl
+    [ "experimentSurveyRedirectUrl", ExperimentSurveyRedirectUrl
     ; "experimentSurveyUrl", ExperimentSurveyUrl
     ]
   | AccountSuspensionNotification
diff --git a/resources/index.scss b/resources/index.scss
index 406c00ec3..3f27ea699 100644
--- a/resources/index.scss
+++ b/resources/index.scss
@@ -11,6 +11,10 @@ h1,
     word-wrap: break-word;
 }
 
+code {
+    font-size: inherit;
+}
+
 @include mobile {
     *+h1, h1+*, *+h2, *+.heading-1, .heading-1+*, *+.heading-2{
         margin-top: $space-md;