1 files changed, 1 insertions, 1 deletions

diff --git a/type/Uptime.class.php b/type/Uptime.class.php
index 4ada117..6e08b0b 100644
--- a/type/Uptime.class.php
+++ b/type/Uptime.class.php
@@ -41,7 +41,7 @@ class Type_Uptime extends Type_Default {
 
                 $c = 0;
                 foreach ($sources as $source) {
-                        $dsname = empty($this->ds_names[$source]) ? $source : $this->ds_names[$source];
+                        $dsname = (isset($this->ds_names[$source]) && !empty($this->ds_names[$source])) ? $this->ds_names[$source] : $source;
                         $color = is_array($this->colors) ? (isset($this->colors[$source])?$this->colors[$source]:$this->colors[$c++]) : $this->colors;
 
                         //current value