diff --git a/python_apps/media-monitor2/media/monitor/pure.py b/python_apps/media-monitor2/media/monitor/pure.py
index 7b505ef6c..3e0f3069d 100644
--- a/python_apps/media-monitor2/media/monitor/pure.py
+++ b/python_apps/media-monitor2/media/monitor/pure.py
@@ -474,20 +474,28 @@ def truncate_to_value(item, value):
     return str(item)
 
 def format_length(mutagen_length):
-    """ Convert mutagen length to airtime length """
-    t = float(mutagen_length)
-    h = int(math.floor(t / 3600))
-    t = t % 3600
-    m = int(math.floor(t / 60))
-    s = t % 60
-    # will be ss.uuu
-    s = str('{0:f}'.format(s))
-    seconds = s.split(".")
-    s = seconds[0]
-    # have a maximum of 6 subseconds.
-    if len(seconds[1]) >= 6: ss = seconds[1][0:6]
-    else: ss = seconds[1][0:]
-    return "%s:%s:%s.%s" % (h, m, s, ss)
+    if convert_format(mutagen_length):
+        """ Convert mutagen length to airtime length """
+        t = float(mutagen_length)
+        h = int(math.floor(t / 3600))
+        t = t % 3600
+        m = int(math.floor(t / 60))
+        s = t % 60
+        # will be ss.uuu
+        s = str('{0:f}'.format(s))
+        seconds = s.split(".")
+        s = seconds[0]
+        # have a maximum of 6 subseconds.
+        if len(seconds[1]) >= 6: ss = seconds[1][0:6]
+        else: ss = seconds[1][0:]
+        return "%s:%s:%s.%s" % (h, m, s, ss)
+
+def convert_format(value):
+    regCompiled = re.compile("^[0-9][0-9]:[0-9][0-9]:[0-9][0-9](\.\d+)?$")
+    if re.search(regCompiled, str(value)) is None:
+        return True
+    else:
+        return False
 
 if __name__ == '__main__':
     import doctest