diff --git a/artefact.inc.php b/artefact.inc.php
index f143264..a2de8b6 100644
--- a/artefact.inc.php
+++ b/artefact.inc.php
@@ -89,11 +89,19 @@ class TaskmanArtefact
   {
     if(!isset($this->sources_affected[$idx]))
     {
-      $sources = $this->task->getFileChanges() != null ? 
-        //tries to match changed files with sources spec
-        $this->getChangedSources($idx) : 
-        $this->getSources($idx);
-      $this->sources_affected[$idx] = is_stale($this->getPath(), $sources);
+      //NOTE: more conservative implementation which always checks for staleness
+      //$sources = $this->task->getFileChanges() != null ? 
+      //  //tries to match changed files with sources spec
+      //  $this->getChangedSources($idx) : 
+      //  $this->getSources($idx);
+      //$this->sources_affected[$idx] = is_stale($this->getPath(), $sources);
+
+      //NOTE: if there any file changes we simply check if there are any changed sources,
+      //      and if yes then we mark the artefact as affected 
+      if($this->task->getFileChanges() != null)
+        $this->sources_affected[$idx] = count($this->getChangedSources($idx)) > 0;
+      else
+        $this->sources_affected[$idx] = is_stale($this->getPath(), $this->getSources($idx));
     }
     
     return $this->sources_affected[$idx];