diff --git a/htdocs/core/extrafieldsinexport.inc.php b/htdocs/core/extrafieldsinexport.inc.php
index cef5f74d172..8b7cf3c81cc 100644
--- a/htdocs/core/extrafieldsinexport.inc.php
+++ b/htdocs/core/extrafieldsinexport.inc.php
@@ -1,5 +1,9 @@
 <?php
 
+// $keyforselect = name of main table
+// keyforelement = name of picto
+// $keyforaliasextra = a key to avoid conflict with extrafields of other objects
+
 if (empty($keyforselect) || empty($keyforelement) || empty($keyforaliasextra))
 {
 	//print $keyforselet.' - '.$keyforelement.' - '.$keyforaliasextra;
diff --git a/htdocs/core/modules/modAgenda.class.php b/htdocs/core/modules/modAgenda.class.php
index d3a78d01d90..5c8a6a3fe5d 100644
--- a/htdocs/core/modules/modAgenda.class.php
+++ b/htdocs/core/modules/modAgenda.class.php
@@ -454,8 +454,12 @@ class modAgenda extends DolibarrModules
 			'p.ref' => 'project',
 		);
 
+		$keyforselect = 'actioncomm'; $keyforelement = 'action'; $keyforaliasextra = 'extra';
+		include DOL_DOCUMENT_ROOT.'/core/extrafieldsinexport.inc.php';
+
 		$this->export_sql_start[$r] = 'SELECT DISTINCT ';
 		$this->export_sql_end[$r]  = ' FROM  '.MAIN_DB_PREFIX.'actioncomm as ac';
+		$this->export_sql_end[$r] .= ' LEFT JOIN '.MAIN_DB_PREFIX.'actioncomm_extrafields as extra ON ac.id = extra.fk_object';
 		$this->export_sql_end[$r] .= ' LEFT JOIN '.MAIN_DB_PREFIX.'c_actioncomm as cac on ac.fk_action = cac.id';
 		if (!empty($user) && empty($user->rights->agenda->allactions->read)) $this->export_sql_end[$r] .= ' LEFT JOIN '.MAIN_DB_PREFIX.'actioncomm_resources acr on ac.id = acr.fk_actioncomm';
 		$this->export_sql_end[$r] .= ' LEFT JOIN '.MAIN_DB_PREFIX.'socpeople as sp on ac.fk_contact = sp.rowid';