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	diff --git a/swh/web/ui/query.py b/swh/web/ui/query.py
	index ee5fc1d53..e2377bd76 100644
	--- a/swh/web/ui/query.py
	+++ b/swh/web/ui/query.py
	@@ -1,40 +1,40 @@
	# Copyright (C) 2015 The Software Heritage developers
	# See the AUTHORS file at the top-level directory of this distribution
	# License: GNU General Public License version 3, or any later version
	# See top-level LICENSE file for more information


	import re

	from swh.core import hashutil


	# Regexp to filter and check inputs
	-sha256_regexp='[0-9a-f]{64}'
	-sha1_regexp='[0-9a-f]{40}'
	+sha256_regexp = '[0-9a-f]{64}'
	+sha1_regexp = '[0-9a-f]{40}'


	def categorize_hash(hash):
	"""Categorize the hash string according to what it is.

	Args:
	hash: hash string representation (sha1 or sha256)

	Returns:
	A dictionary of hash indexed by their nature (sha1, sha256)
	The dictionary will be empty if nothing matches

	Raises:
	None

	"""
	try:
	h = hashutil.hex_to_hash(hash)
	except ValueError: # ignore silently to check the other inputs
	return {}

	if re.search(sha256_regexp, hash):
	return {'sha256': h}
	if re.search(sha1_regexp, hash):
	return {'sha1': h}
	return {}