diff --git a/src/Form/JobItemForm.php b/src/Form/JobItemForm.php
index 565bc68..d33f25a 100644
--- a/src/Form/JobItemForm.php
+++ b/src/Form/JobItemForm.php
@@ -486,11 +486,11 @@ class JobItemForm extends TmgmtFormBase {
    */
   function compareHTMLTags($source, $translation) {
     $pattern = "/\<(.*?)\>/";
-    if (!is_string($source)) {
-      !isset($source['value']) ?: $source = $source['value'];
+    if (is_array($source) && isset($source['value'])) {
+      $source = $source['value'];
     };
-    if (!is_string($translation)) {
-      !isset($translation['value']) ?: $translation = $translation['value'];
+    if (is_array($translation) && isset($translation['value'])) {
+      $translation = $translation['value'];
     }
     preg_match_all($pattern, $source, $source_tags);
     preg_match_all($pattern, $translation, $translation_tags);