diff --git a/messages/de.json b/messages/de.json
index 88584d7d5..98a22e99b 100644
--- a/messages/de.json
+++ b/messages/de.json
@@ -1081,6 +1081,7 @@
       "description": "Phasen-Aufschlüsselung und nächtliche Dauer – gezogen aus Apple Health.",
       "headlineTitle": "Durchschnitt pro Nacht",
       "headlineCaption": "Gemittelt über {count} Nächte – {suffix}",
+      "headlineCaptionSuffix": "pro Nacht",
       "compositionTitle": "Phasen-Verteilung",
       "compositionSubtitle": "Letzte {nights} Nächte",
       "compositionAriaLabel": "Schlafphasen-Verteilung über {nights} Nächte",
diff --git a/messages/en.json b/messages/en.json
index 296f81685..c63da8fa7 100644
--- a/messages/en.json
+++ b/messages/en.json
@@ -1081,6 +1081,7 @@
       "description": "Stage breakdown and nightly duration, drawn from Apple Health.",
       "headlineTitle": "Average per night",
       "headlineCaption": "Averaged across {count} nights — {suffix}",
+      "headlineCaptionSuffix": "per night",
       "compositionTitle": "Stage composition",
       "compositionSubtitle": "Last {nights} nights",
       "compositionAriaLabel": "Sleep stage composition over {nights} nights",
diff --git a/messages/es.json b/messages/es.json
index 55e3b9aff..dcefbb9f9 100644
--- a/messages/es.json
+++ b/messages/es.json
@@ -1081,6 +1081,7 @@
       "description": "Stage breakdown and nightly duration, drawn from Apple Health.",
       "headlineTitle": "Average per night",
       "headlineCaption": "Averaged across {count} nights — {suffix}",
+      "headlineCaptionSuffix": "por noche",
       "compositionTitle": "Stage composition",
       "compositionSubtitle": "Last {nights} nights",
       "compositionAriaLabel": "Sleep stage composition over {nights} nights",
diff --git a/messages/fr.json b/messages/fr.json
index e2546ef47..f51755eda 100644
--- a/messages/fr.json
+++ b/messages/fr.json
@@ -1081,6 +1081,7 @@
       "description": "Stage breakdown and nightly duration, drawn from Apple Health.",
       "headlineTitle": "Average per night",
       "headlineCaption": "Averaged across {count} nights — {suffix}",
+      "headlineCaptionSuffix": "par nuit",
       "compositionTitle": "Stage composition",
       "compositionSubtitle": "Last {nights} nights",
       "compositionAriaLabel": "Sleep stage composition over {nights} nights",
diff --git a/messages/it.json b/messages/it.json
index 9e8847268..67b02a25b 100644
--- a/messages/it.json
+++ b/messages/it.json
@@ -1081,6 +1081,7 @@
       "description": "Stage breakdown and nightly duration, drawn from Apple Health.",
       "headlineTitle": "Average per night",
       "headlineCaption": "Averaged across {count} nights — {suffix}",
+      "headlineCaptionSuffix": "per notte",
       "compositionTitle": "Stage composition",
       "compositionSubtitle": "Last {nights} nights",
       "compositionAriaLabel": "Sleep stage composition over {nights} nights",
diff --git a/messages/pl.json b/messages/pl.json
index 1e2f66193..f2a472673 100644
--- a/messages/pl.json
+++ b/messages/pl.json
@@ -1081,6 +1081,7 @@
       "description": "Stage breakdown and nightly duration, drawn from Apple Health.",
       "headlineTitle": "Average per night",
       "headlineCaption": "Averaged across {count} nights — {suffix}",
+      "headlineCaptionSuffix": "na noc",
       "compositionTitle": "Stage composition",
       "compositionSubtitle": "Last {nights} nights",
       "compositionAriaLabel": "Sleep stage composition over {nights} nights",
diff --git a/src/components/insights/sleep-overview.tsx b/src/components/insights/sleep-overview.tsx
index 83648ae56..dd46e17a8 100644
--- a/src/components/insights/sleep-overview.tsx
+++ b/src/components/insights/sleep-overview.tsx
@@ -53,19 +53,13 @@ interface SleepAnalyticsResponse {
 function formatHoursMinutes(
   totalMinutes: number,
   locale: string,
-): { primary: string; suffix: string } {
+): { primary: string } {
   const hours = Math.floor(totalMinutes / 60);
   const mins = Math.round(totalMinutes - hours * 60);
   if (locale === "de") {
-    return {
-      primary: `${hours} Std. ${mins} Min.`,
-      suffix: "pro Nacht",
-    };
+    return { primary: `${hours} Std. ${mins} Min.` };
   }
-  return {
-    primary: `${hours}h ${mins}m`,
-    suffix: "per night",
-  };
+  return { primary: `${hours}h ${mins}m` };
 }
 
 export function SleepOverview() {
@@ -106,10 +100,11 @@ export function SleepOverview() {
   }
 
   const averageMinutes = sleepSummary?.avg30 ?? sleepSummary?.avg7 ?? null;
-  const { primary, suffix } =
+  const suffix = t("insights.sleep.headlineCaptionSuffix");
+  const { primary } =
     averageMinutes != null
       ? formatHoursMinutes(averageMinutes, locale)
-      : { primary: "—", suffix: "" };
+      : { primary: "—" };
 
   return (
     <div className="space-y-4">