diff --git a/secretary.py b/secretary.py
index a20ebc9..2ffa065 100644
--- a/secretary.py
+++ b/secretary.py
@@ -282,8 +282,8 @@ class Renderer(object):
 
     def _encode_escape_chars(self, xml_text):
         encode_rules = {
-            r'(<text:([ahp]|ruby-base|span|meta|meta-field)>.*)(\\n)(.*</text:([ahp]|ruby-base|span|meta|meta-field)>)': r'\1<text:line-break/>\3',
-            ur'(<text:([ahp]|ruby-base|span|meta|meta-field)>.*)(\u0009)(.*</text:([ahp]|ruby-base|span|meta|meta-field)>)': r'\1<text:tab>\3',
+            r'(<text:(?:[ahp]|ruby-base|span|meta|meta-field)>.*)(\n)(.*</text:(?:[ahp]|ruby-base|span|meta|meta-field)>)': r'\1<text:line-break/>\3',
+            ur'(<text:(?:[ahp]|ruby-base|span|meta|meta-field)>.*)(\u0009)(.*</text:(?:[ahp]|ruby-base|span|meta|meta-field)>)': r'\1<text:tab>\3',
             ur'[\u0009|\u000d|\u000a]': r'<text:s/>'
         }