diff --git a/plugins/truncate_text.inc b/plugins/truncate_text.inc
index ccc03d0..8a8acde 100644
--- a/plugins/truncate_text.inc
+++ b/plugins/truncate_text.inc
@@ -39,8 +39,10 @@ function feeds_tamper_truncate_text_validate($settings) {
 }
 
 function feeds_tamper_truncate_text_callback($source, $item_key, $element_key, &$field, $settings) {
-  $field = drupal_substr($field, 0, $settings['num_char']);
-  if ($settings['ellipses']) {
-    $field .= '...';
+  if (drupal_strlen($field) > $settings['num_char']) {
+    $field = drupal_substr($field, 0, $settings['num_char']);
+    if ($settings['ellipses']) {
+      $field .= '...';
+    }
   }
 }
diff --git a/tests/feeds_tamper_plugins.test b/tests/feeds_tamper_plugins.test
index d8d2aba..6ed824c 100644
--- a/tests/feeds_tamper_plugins.test
+++ b/tests/feeds_tamper_plugins.test
@@ -782,6 +782,7 @@ class FeedsTamperTruncateTextTestCase extends FeedsTamperUnitTestCase {
   public function test() {
     $this->execute('Hello, how are you today?', 'Hello', array('num_char' => 5, 'ellipses' => FALSE));
     $this->execute('Hello, how are you today?', 'Hello...', array('num_char' => 5, 'ellipses' => TRUE));
+    $this->execute('Hello', 'Hello', array('num_char' => 5, 'ellipses' => TRUE));
   }
 }