diff --git a/exrex.py b/exrex.py
index b8f4aa2..f98fd7a 100644
--- a/exrex.py
+++ b/exrex.py
@@ -23,7 +23,7 @@
 except:
     pass
 from re import sre_parse, U
-from itertools import tee
+from itertools import tee, chain
 from random import choice, randint
 from types import GeneratorType
 
@@ -47,6 +47,10 @@
 CATEGORIES = {
     sre_parse.CATEGORY_SPACE: sorted(sre_parse.WHITESPACE),
     sre_parse.CATEGORY_DIGIT: sorted(sre_parse.DIGITS),
+    sre_parse.CATEGORY_WORD: [unichr(x) for x in chain(range(48, 58),
+                                                       range(65, 91),
+                                                       range(95, 96),
+                                                       range(97, 123))],
     'category_any': [unichr(x) for x in range(32, 123)]
 }
 
diff --git a/tests.py b/tests.py
index 2e05b55..ea61ac6 100644
--- a/tests.py
+++ b/tests.py
@@ -44,7 +44,8 @@
     '[áíő]': [u'á', u'í', u'ő'],
     '(a|b)(1|2)\\1\\2\\1\\2': ['a1a1a1', 'a2a2a2', 'b1b1b1', 'b2b2b2'],
     '(?=x)': ['x'],
-    '\\da{2}': ['0aa', '1aa', '2aa', '3aa', '4aa', '5aa', '6aa', '7aa', '8aa', '9aa']
+    '\\da{2}': ['0aa', '1aa', '2aa', '3aa', '4aa', '5aa', '6aa', '7aa', '8aa', '9aa'],
+    '\w': ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '_', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
 }
 
 BIGS = [