diff --git a/coder_sniffer/Drupal/Sniffs/Files/LineLengthSniff.php b/coder_sniffer/Drupal/Sniffs/Files/LineLengthSniff.php
index 9306dc5..8b31e0a 100644
--- a/coder_sniffer/Drupal/Sniffs/Files/LineLengthSniff.php
+++ b/coder_sniffer/Drupal/Sniffs/Files/LineLengthSniff.php
@@ -85,7 +85,7 @@ class Drupal_Sniffs_Files_LineLengthSniff extends Generic_Sniffs_Files_LineLengt
                 // characters.
                 || strpos($tokens[($stackPtr - 2)]['content'], ' ') === false
                 // Allow long "Contains ..." comments in @file doc blocks.
-                || preg_match('/^Contains [a-zA-Z\\\\.]+$/', $tokens[($stackPtr - 2)]['content']) === 1
+                || preg_match('/^Contains [a-zA-Z_\\\\.]+$/', $tokens[($stackPtr - 2)]['content']) === 1
                 // Allow long paths or namespaces in annotations such as
                 // "list_builder" = "Drupal\rules\Entity\Controller\RulesReactionListBuilder",
                 || preg_match('#= ("|\')\S+[\\\\/]\S+("|\'),*$#', $tokens[($stackPtr - 2)]['content']) === 1)
diff --git a/coder_sniffer/Drupal/Test/good/LongNamespace.php b/coder_sniffer/Drupal/Test/good/LongNamespace.php
index b173cd7..7c827be 100644
--- a/coder_sniffer/Drupal/Test/good/LongNamespace.php
+++ b/coder_sniffer/Drupal/Test/good/LongNamespace.php
@@ -5,7 +5,7 @@
  * Contains \Drupal\random\bunny\hat\long\namingspace\wtf\still\going\strong\LongNamespace.php.
  */
 
-namespace Drupal\random\bunny\hat\long\namingspace\wtf\still\going\strong;
+namespace Drupal\random\bunny_hat\long\namingspace\wtf\still\going\strong;
 
 /**
  * Some fluffy comment about the class.