diff --git a/src/calibre/utils/titlecase.py b/src/calibre/utils/titlecase.py
index 44c0357300..3e01d3a526 100755
--- a/src/calibre/utils/titlecase.py
+++ b/src/calibre/utils/titlecase.py
@@ -9,13 +9,13 @@ License: http://www.opensource.org/licenses/mit-license.php
 
 import re
 
-from calibre.utils.icu import capitalize
+from calibre.utils.icu import capitalize, upper
 
 __all__ = ['titlecase']
 __version__ = '0.5'
 
 SMALL = 'a|an|and|as|at|but|by|en|for|if|in|of|on|or|the|to|v\.?|via|vs\.?'
-PUNCT = r"""!"#$%&'‘()*+,\-‒–—―./:;?@[\\\]_`{|}~"""
+PUNCT = r"""!"#$%&'‘’()*+,\-‒–—―./:;?@[\\\]_`{|}~"""
 
 SMALL_WORDS = re.compile(r'^(%s)$' % SMALL, re.I)
 INLINE_PERIOD = re.compile(r'[a-z][.][a-z]', re.I)
@@ -26,7 +26,6 @@ SMALL_LAST = re.compile(r'\b(%s)[%s]?$' % (SMALL, PUNCT), re.I|re.U)
 SMALL_AFTER_NUM = re.compile(r'(\d+\s+)(a|an|the)\b', re.I|re.U)
 SUBPHRASE = re.compile(r'([:.;?!][ ])(%s)' % SMALL)
 APOS_SECOND = re.compile(r"^[dol]{1}['‘]{1}[a-z]+$", re.I)
-ALL_CAPS = re.compile(r'^[A-Z0-9\s%s]+$' % PUNCT)
 UC_INITIALS = re.compile(r"^(?:[A-Z]{1}\.{1}|[A-Z]{1}\.{1}[A-Z]{1})+$")
 
 _lang = None
@@ -51,7 +50,7 @@ def titlecase(text):
 
     """
 
-    all_caps = ALL_CAPS.match(text)
+    all_caps = upper(text) == text
 
     words = re.split('\s+', text)
     line = []