diff --git a/htdocs/core/lib/ajax.lib.php b/htdocs/core/lib/ajax.lib.php
index 9e726f0eb18..4aac7871fbc 100644
--- a/htdocs/core/lib/ajax.lib.php
+++ b/htdocs/core/lib/ajax.lib.php
@@ -136,7 +136,7 @@ function ajax_autocompleter($selected, $htmlname, $url, $urloption='', $minLengt
     						}
     						if (ui.item.textarea) {
     							$.each(ui.item.textarea, function(key, value) {
-    								if (typeof CKEDITOR == "object" && typeof CKEDITOR.instances != "undefined") {
+    								if (typeof CKEDITOR == "object" && typeof CKEDITOR.instances != "undefined" && CKEDITOR.instances["product_desc"] != "undefined") {
     									CKEDITOR.instances[key].setData(value);
     									CKEDITOR.instances[key].focus();
     								} else {
diff --git a/htdocs/core/tpl/objectline_add.tpl.php b/htdocs/core/tpl/objectline_add.tpl.php
index f59df4779c6..e6409e4b533 100644
--- a/htdocs/core/tpl/objectline_add.tpl.php
+++ b/htdocs/core/tpl/objectline_add.tpl.php
@@ -219,7 +219,7 @@ $(document).ready(function() {
 
 	$('#idprod').change(function() {
 		if ($(this).val().length > 0) {
-			if (typeof CKEDITOR == 'object' && typeof CKEDITOR.instances != 'undefined') {
+			if (typeof CKEDITOR == 'object' && typeof CKEDITOR.instances != 'undefined' && CKEDITOR.instances['product_desc'] != 'undefined') {
 				// We use CKEditor
 				CKEDITOR.instances['product_desc'].focus();
 			} else {
@@ -338,7 +338,7 @@ $(document).ready(function() {
 
 			var origin_desc = $('#origin_desc_cache').val();
 
-			if (typeof CKEDITOR == 'object' && typeof CKEDITOR.instances != 'undefined') {
+			if (typeof CKEDITOR == 'object' && typeof CKEDITOR.instances != 'undefined' && CKEDITOR.instances['product_desc'] != 'undefined') {
 				// We use CKEditor
 				var freecontent = CKEDITOR.instances['product_desc'].getData();
 				if (origin_desc.length > 0)
@@ -360,7 +360,7 @@ $(document).ready(function() {
 			var content = $('#free_desc_cache').val();
 		}
 
-		if (typeof CKEDITOR == 'object' && typeof CKEDITOR.instances != 'undefined') {
+		if (typeof CKEDITOR == 'object' && typeof CKEDITOR.instances != 'undefined' && CKEDITOR.instances['product_desc'] != 'undefined') {
 			// We use CKEditor
 			CKEDITOR.instances['product_desc'].setData(content);
 		} else {