diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 16ab5f8f1b9..847d8fe8027 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -9091,7 +9091,7 @@ class Form
 				    		},
 				    		cache: true
 				    	},
-		 				language: select2arrayoflanguage || \'en\',
+		 				language: (typeof select2arrayoflanguage === \'undefined\') ? \'en\' : select2arrayoflanguage,
 						containerCssClass: \':all:\',					/* Line to add class from the original SELECT propagated to the new <span class="select2-selection...> tag */
 					    placeholder: \'' . dol_escape_js($placeholder) . '\',
 				    	escapeMarkup: function (markup) { return markup; }, 	// let our custom formatter work
@@ -9181,7 +9181,7 @@ class Form
 
 					$(\'.' . dol_escape_js($htmlname) . '\').select2({
 						data: data,
-						language: select2arrayoflanguage || \'en\',
+						language: (typeof select2arrayoflanguage === \'undefined\') ? \'en\' : select2arrayoflanguage,
 						containerCssClass: \':all:\',					/* Line to add class from the original SELECT propagated to the new <span class="select2-selection...> tag */
 						placeholder: \'' . dol_escape_js($placeholder) . '\',
 						escapeMarkup: function (markup) { return markup; }, 	// let our custom formatter work
@@ -9375,7 +9375,7 @@ class Form
 								// Specify format function for selected item
 								formatSelection: formatSelection,
 							 	templateSelection: formatSelection,		/* For 4.0 */
-							 	language: select2arrayoflanguage || \'en\'
+							 	language: (typeof select2arrayoflanguage === \'undefined\') ? \'en\' : select2arrayoflanguage
 							});
 
 							/* Add also morecss to the css .select2 that is after the #htmlname, for component that are show dynamically after load, because select2 set
diff --git a/htdocs/societe/card.php b/htdocs/societe/card.php
index 470acf88c76..fd29d86a584 100644
--- a/htdocs/societe/card.php
+++ b/htdocs/societe/card.php
@@ -1375,7 +1375,7 @@ if (is_object($objcanvas) && $objcanvas->displayCanvasExists($canvasdisplayactio
 					placeholder: "' . $langs->trans('Name of the new third party. In the meantime we check if it already exists...') . '",
 					allowClear: true,
 					minimumInputLength: 3,
-					language: select2arrayoflanguage,
+					language: (typeof select2arrayoflanguage === \'undefined\') ? \'en\' : select2arrayoflanguage,
 					containerCssClass: ":all:",
 					selectionCssClass: ":all:",
 					tags: true,