diff --git a/htdocs/core/modules/project/task/mod_task_simple.php b/htdocs/core/modules/project/task/mod_task_simple.php
index 13c23cb4f739c0305b3b23b0e8f75ccb76bea2cf..f6acd1b4d7a05121e4473602764cbed8c51c1a6d 100644
--- a/htdocs/core/modules/project/task/mod_task_simple.php
+++ b/htdocs/core/modules/project/task/mod_task_simple.php
@@ -67,7 +67,7 @@ class mod_task_simple extends ModeleNumRefTask
      */
     function canBeActivated()
     {
-    	global $conf,$langs;
+    	global $conf,$langs,$db;
 
         $coyymm=''; $max='';
 
@@ -150,4 +150,4 @@ class mod_task_simple extends ModeleNumRefTask
     }
 }
 
-?>
\ No newline at end of file
+?>