diff --git a/static/app/views/alerts/rules/issue/details/ruleDetails.tsx b/static/app/views/alerts/rules/issue/details/ruleDetails.tsx
index b797d399f51ea0..73254830dbdad8 100644
--- a/static/app/views/alerts/rules/issue/details/ruleDetails.tsx
+++ b/static/app/views/alerts/rules/issue/details/ruleDetails.tsx
@@ -473,12 +473,14 @@ export default function AlertRuleDetails() {
               <Alert.Container>
                 {rule.snoozeForEveryone ? (
                   <Alert variant="info">
-                    {tct(
-                      "[creator] muted this alert for everyone so you won't get these notifications in the future.",
-                      {
-                        creator: rule.snoozeCreatedBy,
-                      }
-                    )}
+                    {rule.snoozeCreatedBy
+                      ? tct(
+                          "[creator] muted this alert for everyone so you won't get these notifications in the future.",
+                          {creator: rule.snoozeCreatedBy}
+                        )
+                      : t(
+                          "This alert has been muted for everyone so you won't get these notifications in the future."
+                        )}
                   </Alert>
                 ) : (
                   <UserSnoozeDeprecationBanner projectId={project.id} />
diff --git a/static/app/views/alerts/rules/metric/details/body.tsx b/static/app/views/alerts/rules/metric/details/body.tsx
index 83318ec2549b49..d8e6d133bfe87b 100644
--- a/static/app/views/alerts/rules/metric/details/body.tsx
+++ b/static/app/views/alerts/rules/metric/details/body.tsx
@@ -175,12 +175,14 @@ export function MetricDetailsBody({
             <Alert.Container>
               {rule.snoozeForEveryone ? (
                 <Alert variant="info">
-                  {tct(
-                    "[creator] muted this alert for everyone so you won't get these notifications in the future.",
-                    {
-                      creator: rule.snoozeCreatedBy,
-                    }
-                  )}
+                  {rule.snoozeCreatedBy
+                    ? tct(
+                        "[creator] muted this alert for everyone so you won't get these notifications in the future.",
+                        {creator: rule.snoozeCreatedBy}
+                      )
+                    : t(
+                        "This alert has been muted for everyone so you won't get these notifications in the future."
+                      )}
                 </Alert>
               ) : (
                 <UserSnoozeDeprecationBanner projectId={project.id} />