diff --git a/cwidgets/util.go b/cwidgets/util.go
index ba6c326..4fa1243 100644
--- a/cwidgets/util.go
+++ b/cwidgets/util.go
@@ -9,6 +9,7 @@ const (
 	kb = 1024
 	mb = kb * 1024
 	gb = mb * 1024
+	tb = gb * 1024
 )
 
 // convenience method
@@ -28,8 +29,12 @@ func ByteFormat(n int64) string {
 		n = n / mb
 		return fmt.Sprintf("%sM", strconv.FormatInt(n, 10))
 	}
-	nf := float64(n) / gb
-	return fmt.Sprintf("%sG", unpadFloat(nf))
+	if n < tb {
+		nf := float64(n) / gb
+		return fmt.Sprintf("%sG", unpadFloat(nf))
+	}
+	nf := float64(n) / tb
+	return fmt.Sprintf("%sT", unpadFloat(nf))
 }
 
 func unpadFloat(f float64) string {