diff --git a/VERSION b/VERSION
index 03d0a1ba..43aaa087 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-Version 2.6.3-stable+timestamp.2013.09.19.20.49.27
+Version 2.6.3-stable+timestamp.2013.09.19.21.32.38
diff --git a/gluon/languages.py b/gluon/languages.py
index d377d34e..a3f0db9e 100644
--- a/gluon/languages.py
+++ b/gluon/languages.py
@@ -67,8 +67,8 @@ regex_param = re.compile(r'{(?P<s>.+?)}')
 
 # pattern for a valid accept_language
 regex_language = \
-    re.compile('([a-z]{2}(?:\-[a-z]{2})?(?:\-[a-z]{2})?)(?:[,;]|$)')
-regex_langfile = re.compile('^[a-z]{2}(-[a-z]{2})?\.py$')
+    re.compile('([a-z]{2,3}(?:\-[a-z]{2})?(?:\-[a-z]{2})?)(?:[,;]|$)')
+regex_langfile = re.compile('^[a-z]{2,3}(-[a-z]{2})?\.py$')
 regex_backslash = re.compile(r"\\([\\{}%])")
 regex_plural = re.compile('%({.+?})')
 regex_plural_dict = re.compile('^{(?P<w>[^()[\]][^()[\]]*?)\((?P<n>[^()\[\]]+)\)}$')  # %%{word(varname or number)}