diff --git a/src/phpDocumentor/Reflection/DocBlock.php b/src/phpDocumentor/Reflection/DocBlock.php
index 9d5cfb6..2fea2dc 100644
--- a/src/phpDocumentor/Reflection/DocBlock.php
+++ b/src/phpDocumentor/Reflection/DocBlock.php
@@ -108,7 +108,7 @@ class DocBlock implements \Reflector
         } else {
             // clears all extra horizontal whitespace from the line endings
             // to prevent parsing issues
-            $comment = preg_replace('~(?m)\h*$~', '', $comment);
+            $comment = preg_replace('~(?m)\h*$~u', '', $comment);
 
             /*
              * Splits the docblock into a short description, long description and
@@ -148,7 +148,7 @@ class DocBlock implements \Reflector
           )
         )?
         (\s+ [\s\S]*)? # everything that follows
-        /', $comment, $matches
+        /u', $comment, $matches
             );
             array_shift($matches);
         }