diff --git a/src/widgets/fritzbox/component.jsx b/src/widgets/fritzbox/component.jsx
index 7c32f617..2e12c235 100644
--- a/src/widgets/fritzbox/component.jsx
+++ b/src/widgets/fritzbox/component.jsx
@@ -7,15 +7,25 @@ import useWidgetAPI from "utils/proxy/use-widget-api";
 export const fritzboxDefaultFields = ["connectionStatus", "uptime", "maxDown", "maxUp"];
 
 const formatUptime = (timestamp) => {
-  const hours = Math.floor(timestamp / 3600);
+  const days = Math.floor(timestamp / (3600 * 24));
+  const hours = Math.floor((timestamp % (3600 * 24)) / 3600);
   const minutes = Math.floor((timestamp % 3600) / 60);
   const seconds = timestamp % 60;
+  const format = (num) => String(num).padStart(2, "0");
 
-  const hourDuration = hours > 0 ? `${hours}h` : "00h";
-  const minDuration = minutes > 0 ? `${minutes}m` : "00m";
-  const secDuration = seconds > 0 ? `${seconds}s` : "00s";
+  let uptimeStr = "";
+  if (days) {
+    uptimeStr += `${days}d`;
+  }
+  if (hours || days) {
+    uptimeStr += `${format(hours)}h`;
+  }
+  uptimeStr += `${format(minutes)}m`;
+  if (!days) {
+    uptimeStr += `${format(seconds)}s `;
+  }
 
-  return hourDuration + minDuration + secDuration;
+  return uptimeStr;
 };
 
 export default function Component({ service }) {