diff --git a/src/PhpWord/Writer/Word2007/Element/Field.php b/src/PhpWord/Writer/Word2007/Element/Field.php
index 5f5ae094..9fc45b21 100644
--- a/src/PhpWord/Writer/Word2007/Element/Field.php
+++ b/src/PhpWord/Writer/Word2007/Element/Field.php
@@ -64,7 +64,7 @@ class Field extends Text
         $xmlWriter->endElement(); // w:r
 
         if ($element->getText() != null) {
-            if ($element->getText() instanceof PhpOffice\PhpWord\Element\TextRun) {
+            if ($element->getText() instanceof \PhpOffice\PhpWord\Element\TextRun) {
 
                 $containerWriter = new Container($xmlWriter, $element->getText(), true);
                 $containerWriter->write();