diff --git a/webif/lib/system.class b/webif/lib/system.class
index dbb30a6..71fbc3e 100644
--- a/webif/lib/system.class
+++ b/webif/lib/system.class
@@ -477,20 +477,13 @@ proc {system diskspace} {{raw 0}} {
 	set perc $($used * 100 / $size)
 	set fperc $(100 - $perc)
 
-	set tsrdir [system tsrdir]
-	switch [system model] {
-		HDR {
-			set tsrok [file isdirectory $tsrdir]
-		}
-		HD {
-			set tsrok [file exists "$tsrdir/0.ts"]
-		}
+	if {[catch {set tsrts [file size [system tsr]]}]} {
+		set tsrts 0
 	}
-
-	if {$tsrok} {
+	if {[expr {$tsrts > 0}]} {
 		set tsrbuf 21474836480
 		if {[catch {
-			lassign [exec du -ks $tsrdir] tsrused
+			lassign [exec du -ks [system tsrdir]] tsrused
 		}]} {
 			set tsrused 0
 			set tsrbuf 0