pyderasn.py | 2 +-

diff --git a/pyderasn.py b/pyderasn.py
index 57bd5d60224358707ad7fe73986cfaf5871be17031f01d155b5f1dea82bb6c7f..a9188a663ef07ef9cf1d8fa152dea319789e6a86e1d4c9cd6dbeb149ec7ac5e7 100755
--- a/pyderasn.py
+++ b/pyderasn.py
@@ -766,7 +766,7 @@ LENINDEF = b"\x80"  # length indefinite mark
 LENINDEF_PP_CHAR = "I" if PY2 else "∞"
 NAMEDTUPLE_KWARGS = {} if PY2 else {"module": __name__}
 SET01 = frozenset("01")
-DECIMALS = frozenset("0123456789")
+DECIMALS = frozenset(digits)
 DECIMAL_SIGNS = ".,"