diff --git a/htdocs/comm/action/class/actioncomm.class.php b/htdocs/comm/action/class/actioncomm.class.php
index 4bef5ddcd16..03ca6ae0369 100644
--- a/htdocs/comm/action/class/actioncomm.class.php
+++ b/htdocs/comm/action/class/actioncomm.class.php
@@ -407,7 +407,7 @@ class ActionComm extends CommonObject
 		// Check parameters
 		if (!isset($this->userownerid) || $this->userownerid === '') {	// $this->userownerid may be 0 (anonymous event) of > 0
 			dol_syslog("You tried to create an event but mandatory property ownerid was not defined", LOG_WARNING);
-			$this->errors[] = 'ErrorPropertyUserowneridNotDefined';
+			$this->errors[] = 'ErrorActionCommPropertyUserowneridNotDefined';
 			return -1;
 		}
 
@@ -478,7 +478,7 @@ class ActionComm extends CommonObject
 				$this->type_id = $cactioncomm->id;
 				$this->type_code = $cactioncomm->code;
 			} elseif ($result == 0) {
-				$this->error = 'Failed to get record with id '.$this->type_id.' code '.$this->type_code.' from dictionary "type of events"';
+				$this->error = $langs->trans('ErrorActionCommBadType', $this->type_id, $this->type_code);
 				return -1;
 			} else {
 				$this->error = $cactioncomm->error;
diff --git a/htdocs/eventorganization/class/conferenceorbooth.class.php b/htdocs/eventorganization/class/conferenceorbooth.class.php
index ddc75a034d0..ecd2fcd191f 100644
--- a/htdocs/eventorganization/class/conferenceorbooth.class.php
+++ b/htdocs/eventorganization/class/conferenceorbooth.class.php
@@ -109,7 +109,7 @@ class ConferenceOrBooth extends ActionComm
 		'fk_soc' => array('type'=>'integer:Societe:societe/class/societe.class.php:1:status=1 AND entity IN (__SHARED_ENTITIES__)', 'label'=>'ThirdParty', 'enabled'=>'1', 'position'=>50, 'notnull'=>-1, 'visible'=>1, 'index'=>1, 'help'=>"LinkToThirparty",),
 		'fk_project' => array('type'=>'integer:Project:projet/class/project.class.php:1::eventorganization', 'label'=>'Project', 'enabled'=>'1', 'position'=>52, 'notnull'=>-1, 'visible'=>-1, 'index'=>1,),
 		'note' => array('type'=>'text', 'label'=>'Description', 'enabled'=>'1', 'position'=>60, 'notnull'=>0, 'visible'=>1,),
-		'fk_action' => array('type'=>'sellist:c_actioncomm:libelle:id::module LIKE (\'%@eventorganization\')', 'default'=>'', 'label'=>'Format', 'enabled'=>'1', 'position'=>60, 'notnull'=>	1, 'visible'=>1,),
+		'fk_action' => array('type'=>'sellist:c_actioncomm:libelle:id::module LIKE (\'%@eventorganization\')', 'label'=>'Format', 'enabled'=>'1', 'position'=>60, 'notnull'=>1, 'visible'=>1,),
 		'datep' => array('type'=>'datetime', 'label'=>'DateStart', 'enabled'=>'1', 'position'=>70, 'notnull'=>0, 'visible'=>1, 'showoncombobox'=>'1',),
 		'datep2' => array('type'=>'datetime', 'label'=>'DateEnd', 'enabled'=>'1', 'position'=>71, 'notnull'=>0, 'visible'=>1, 'showoncombobox'=>'1',),
 		'datec' => array('type'=>'datetime', 'label'=>'DateCreation', 'enabled'=>'1', 'position'=>500, 'notnull'=>1, 'visible'=>-2,),
diff --git a/htdocs/langs/en_US/errors.lang b/htdocs/langs/en_US/errors.lang
index bb5e7c5e287..002aa63fa62 100644
--- a/htdocs/langs/en_US/errors.lang
+++ b/htdocs/langs/en_US/errors.lang
@@ -293,4 +293,6 @@ WarningFailedToAddFileIntoDatabaseIndex=Warning, failed to add file entry into E
 WarningTheHiddenOptionIsOn=Warning, the hidden option <b>%s</b> is on.
 WarningCreateSubAccounts=Warning, you can't create directly a sub account, you must create a third party or an user and assign them an accounting code to find them in this list
 WarningAvailableOnlyForHTTPSServers=Available only if using HTTPS secured connection.
-WarningModuleXDisabledSoYouMayMissEventHere=Module %s has not been enabled. So you may miss a lot of event here.
\ No newline at end of file
+WarningModuleXDisabledSoYouMayMissEventHere=Module %s has not been enabled. So you may miss a lot of event here.
+ErrorActionCommPropertyUserowneridNotDefined=User's owner is required
+ErrorActionCommBadType=Selected event type (id: %n, code: %s) do not exist in Event Type dictionary