diff --git a/htdocs/adherents/class/adherent.class.php b/htdocs/adherents/class/adherent.class.php
index b0ca0986ffb..6e77fd3fa95 100644
--- a/htdocs/adherents/class/adherent.class.php
+++ b/htdocs/adherents/class/adherent.class.php
@@ -2288,6 +2288,7 @@ class Adherent extends CommonObject
 
 		$datas = [];
 
+		$nofetch = empty($params['nofetch']) ? false : true;
 		if (!empty($conf->global->MAIN_OPTIMIZEFORTEXTBROWSER)) {
 			$langs->load("users");
 			return ['optimize' => $langs->trans("ShowUser")];
@@ -2318,6 +2319,12 @@ class Adherent extends CommonObject
 			$datas['email'] = '<br><b>'.$langs->trans("EMail").':</b> '.$this->email;
 		}
 		$datas['address'] = '<br><b>'.$langs->trans("Address").':</b> '.dol_format_address($this, 1, ' ', $langs);
+		// show categories for this record only in ajax to not overload lists
+		if (isModEnabled('categorie') && !$nofetch) {
+			require_once DOL_DOCUMENT_ROOT . '/categories/class/categorie.class.php';
+			$form = new Form($this->db);
+			$datas['categories'] = '<br>' . $form->showCategories($this->id, Categorie::TYPE_MEMBER, 1);
+		}
 		$datas['divclose'] = '</div>';
 
 		return $datas;
@@ -2353,6 +2360,7 @@ class Adherent extends CommonObject
 			'id' => $this->id,
 			'objecttype' => $this->element,
 			'option' => $option,
+			'nofetch' => 1,
 		];
 		if (getDolGlobalInt('MAIN_ENABLE_AJAX_TOOLTIP')) {
 			$classfortooltip = 'classforajaxtooltip';
diff --git a/htdocs/comm/action/class/actioncomm.class.php b/htdocs/comm/action/class/actioncomm.class.php
index fd5b55e70fe..11cb4f98dbd 100644
--- a/htdocs/comm/action/class/actioncomm.class.php
+++ b/htdocs/comm/action/class/actioncomm.class.php
@@ -1580,6 +1580,7 @@ class ActionComm extends CommonObject
 		$langs->load('agenda');
 		$datas = [];
 
+		$nofetch = empty($params['nofetch']) ? false : true;
 		// Set label of type
 		$labeltype = '';
 		if ($this->type_code) {
@@ -1631,6 +1632,12 @@ class ActionComm extends CommonObject
 			$datas['note'] .= (dol_textishtml($texttoshow) ? str_replace(array("\r", "\n"), "", $texttoshow) : str_replace(array("\r", "\n"), '<br>', $texttoshow));
 			$datas['note'] .= '</div>';
 		}
+		// show categories for this record only in ajax to not overload lists
+		if (isModEnabled('categorie') && !$nofetch) {
+			require_once DOL_DOCUMENT_ROOT . '/categories/class/categorie.class.php';
+			$form = new Form($this->db);
+			$datas['categories'] = '<br>' . $form->showCategories($this->id, Categorie::TYPE_ACTIONCOMM, 1);
+		}
 
 		return $datas;
 	}
@@ -1734,6 +1741,7 @@ class ActionComm extends CommonObject
 				'id' => $this->id,
 				'objecttype' => $this->element,
 				'option' => $option,
+				'nofetch' => 1,
 			];
 			$classfortooltip = 'classforajaxtooltip';
 			$dataparams = ' data-params='.json_encode($params);