diff --git a/createhdds.py b/createhdds.py
index acc4d06..a159031 100755
--- a/createhdds.py
+++ b/createhdds.py
@@ -43,6 +43,8 @@ from six.moves.urllib.request import urlopen
 # directory.
 SCRIPTDIR = os.path.abspath(os.path.dirname(sys.argv[0]))
 CPUARCH = platform.processor()
+if not CPUARCH:
+    CPUARCH = platform.machine()
 logger = logging.getLogger('createhdds')
 
 def handle_size(size):