diff --git a/python_apps/pypo/media/update/silananalyzer.py b/python_apps/pypo/media/update/silananalyzer.py
index 4d93deddf..0e8f14027 100644
--- a/python_apps/pypo/media/update/silananalyzer.py
+++ b/python_apps/pypo/media/update/silananalyzer.py
@@ -47,8 +47,9 @@ class SilanAnalyzer(Thread):
                         proc = subprocess.Popen(command, stdout=subprocess.PIPE)
                         out = proc.communicate()[0].strip('\r\n')
                         info = json.loads(out)
-                        data['cuein'] = str('{0:f}'.format(info['sound'][0][0]))
-                        data['cueout'] = str('{0:f}'.format(info['sound'][-1][1]))
+                        if len(info['sound']) >= 2:
+                            data['cuein'] = str('{0:f}'.format(info['sound'][0][0]))
+                            data['cueout'] = str('{0:f}'.format(info['sound'][-1][1]))
                     except Exception, e:
                         self.logger.error(str(command))
                         self.logger.error(e)