1 files changed, 5 insertions, 1 deletions

diff --git a/type/Base.class.php b/type/Base.class.php
index ff9a235..1f42f4f 100644
--- a/type/Base.class.php
+++ b/type/Base.class.php
@@ -155,6 +155,10 @@ class Type_Base {
         function rrd_files() {
                 $files = $this->get_filenames();
 
+                $this->tinstances = array();
+                $this->files = array();
+                $this->identifiers = array();
+
                 foreach($files as $filename) {
                         $basename=basename($filename,'.rrd');
                         $instance = strpos($basename,'-')
@@ -186,7 +190,7 @@ class Type_Base {
 
                 $files = glob($this->datadir .'/'. $identifier . $wildcard . 'rrd');
 
-                return $files;
+                return $files ? $files : array();
         }
 
         function rrd_graph($debug = false) {