diff --git a/htdocs/admin/tools/listevents.php b/htdocs/admin/tools/listevents.php
index 78a3f8948d4..2b832910623 100644
--- a/htdocs/admin/tools/listevents.php
+++ b/htdocs/admin/tools/listevents.php
@@ -219,7 +219,7 @@ if ($result)
 	if ($search_user) $param .= '&search_user='.urlencode($search_user);
 	if ($search_desc) $param .= '&search_desc='.urlencode($search_desc);
 	if ($search_ua)   $param .= '&search_ua='.urlencode($search_ua);
-	if ($search_prefix_sessiona)   $param .= '&search_prefix_session='.urlencode($search_prefix_session);
+	if ($search_prefix_session)   $param .= '&search_prefix_session='.urlencode($search_prefix_session);
 	if ($date_startmonth) $param .= "&date_startmonth=".urlencode($date_startmonth);
 	if ($date_startday)   $param .= "&date_startday=".urlencode($date_startday);
 	if ($date_startyear)  $param .= "&date_startyear=".urlencode($date_startyear);
diff --git a/htdocs/webservices/server_thirdparty.php b/htdocs/webservices/server_thirdparty.php
index 4bed0e1be3b..7c97159d0bb 100644
--- a/htdocs/webservices/server_thirdparty.php
+++ b/htdocs/webservices/server_thirdparty.php
@@ -510,7 +510,7 @@ function createThirdParty($authentication, $thirdparty)
 			$db->commit();
 
 			// Patch to add capability to associate (one) sale representative
-			if ($thirdparty['commid'] && $thirdparty['commid'] > 0)
+			if (!empty($thirdparty['commid']) && $thirdparty['commid'] > 0)
 				$newobject->add_commercial($fuser, $thirdparty["commid"]);
 
 			$objectresp = array('result'=>array('result_code'=>'OK', 'result_label'=>''), 'id'=>$newobject->id, 'ref'=>$newobject->ref);