diff --git a/sources/Renderer/Bootstrap/FieldRenderer/BsSimpleFieldRenderer.php b/sources/Renderer/Bootstrap/FieldRenderer/BsSimpleFieldRenderer.php
index efe350539..9c284e496 100644
--- a/sources/Renderer/Bootstrap/FieldRenderer/BsSimpleFieldRenderer.php
+++ b/sources/Renderer/Bootstrap/FieldRenderer/BsSimpleFieldRenderer.php
@@ -578,7 +578,11 @@ HTML
 			$aContactPicturesCache = array();
 			$aPeerColorClassCache = array();
 			// Note: Yes, the config. param. is named after the backoffice element but we hope that we will "soon" have some kind of "light" activity panel in the portal too, so we keep this name.
-			$bHideContactPicture = in_array(PORTAL_ID, utils::GetConfig()->Get('activity_panel.hide_avatars'));
+			$bHideContactPicture = false;
+			if (defined('PORTAL_ID'))
+			{
+				$bHideContactPicture= in_array(PORTAL_ID, utils::GetConfig()->Get('activity_panel.hide_avatars'));
+			}
 			// Current user
 			$iCurrentUserId = UserRights::GetUserId();