diff --git a/static/main-scpc.html b/static/main-scpc.html
index c28e803..003854c 100644
--- a/static/main-scpc.html
+++ b/static/main-scpc.html
@@ -1047,9 +1047,8 @@
                     let mins = uptime % 60; uptime = Math.floor(uptime / 60)
                     let hours = uptime % 24
                     uptime = Math.floor( uptime / 24)
-                    let res = `${mins}m ${secs}s`
-                    if (hours > 0) { res = `${hours}h ` + res }
-                    if (uptime > 0) { res = `${uptime}d ` + res }
+                    let res = `${hours}:${mins}:${secs}`
+                    if (uptime > 0) { res = `${uptime} days, ` + res }
                     this.stat_os.uptime = res
                 } else {
                     this.stat_os.uptime = '?'
diff --git a/static/main-tdma.html b/static/main-tdma.html
index eb81ef2..031aab7 100644
--- a/static/main-tdma.html
+++ b/static/main-tdma.html
@@ -785,9 +785,8 @@
                     let mins = uptime % 60; uptime = Math.floor(uptime / 60)
                     let hours = uptime % 24
                     uptime = Math.floor( uptime / 24)
-                    let res = `${mins}m ${secs}s`
-                    if (hours > 0) { res = `${hours}h ` + res }
-                    if (uptime > 0) { res = `${uptime}d ` + res }
+                    let res = `${hours}:${mins}:${secs}`
+                    if (uptime > 0) { res = `${uptime} days, ` + res }
                     this.stat_os.uptime = res
                 } else {
                     this.stat_os.uptime = '?'