diff --git a/source-builder/sb/download.py b/source-builder/sb/download.py
index 51747b1..df448e0 100644
--- a/source-builder/sb/download.py
+++ b/source-builder/sb/download.py
@@ -58,7 +58,11 @@ def _hash_check(file_, absfile, macros, remove = True):
         hash = hash.split()
         if len(hash) != 2:
             raise error.internal('invalid hash format: %s' % (file_))
-        if hash[0] not in hashlib.algorithms:
+        try:
+            hashlib_algorithms = hashlib.algorithms
+        except:
+            hashlib_algorithms = ['md5', 'sha1', 'sha224', 'sha256', 'sha384', 'sha512']
+        if hash[0] not in hashlib_algorithms:
             raise error.general('invalid hash algorithm for %s: %s' % (file_, hash[0]))
         hasher = None
         _in = None