diff --git a/emhttp/plugins/dynamix/nchan/update_1 b/emhttp/plugins/dynamix/nchan/update_1
index 66f849b19..9a117a234 100755
--- a/emhttp/plugins/dynamix/nchan/update_1
+++ b/emhttp/plugins/dynamix/nchan/update_1
@@ -63,8 +63,10 @@ while (true) {
   $bytes = $meminfo = $sysinfo = [];
   $hooks = array_filter(glob("/usr/local/emhttp/plugins/*/system/*",GLOB_NOSORT),function($file){return is_executable($file);});
   foreach ($hooks as $hook) {
+    $data = @intval(exec(escapeshellarg($hook)));
+    if (!$data) continue;
     $names[] = _(basename($hook)); // name of element (with translation)
-    $bytes[] = @intval(exec(escapeshellarg($hook))); // value in bytes of element (error -> 0)
+    $bytes[] = $data;              // value in bytes of element (error -> 0)
   }
   $services  = $used-array_sum($bytes);
   $meminfo[] = round(100*$used/$total)."%";