diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 7edfd6d6689..8ef4fb4ede6 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -954,12 +954,15 @@ function sanitizeVal($out = '', $check = 'alphanohtml', $filter = null, $options
 
 				// Restore entity ' into ' (restricthtml is for html content so we can use html entity)
 				$out = preg_replace('/'/i', "'", $out);
-
-				preg_match_all('/(<img)/i', $out, $reg);
-				if (count($reg[0]) > getDolGlobalInt("MAIN_SECURITY_MAX_IMG_IN_HTML_CONTENT", 1000)) {
-					$out = '';
-				}
 			} while ($oldstringtoclean != $out);
+
+			// Check the limit of external links in a Rich text content. We count '<img' and 'url('
+			$reg = array();
+			preg_match_all('/(<img|url\()/i', $out, $reg);
+			if (count($reg[0]) > getDolGlobalInt("MAIN_SECURITY_MAX_IMG_IN_HTML_CONTENT", 1000)) {
+				return 'TooManyLinksIntoHTMLString';
+			}
+
 			break;
 		case 'custom':
 			if (empty($filter)) {