diff --git a/tools/lib/helpers.py b/tools/lib/helpers.py
index 423f207b4d..5ec6c62339 100644
--- a/tools/lib/helpers.py
+++ b/tools/lib/helpers.py
@@ -5,9 +5,9 @@ TIME_FMT = "%Y-%m-%d--%H-%M-%S"
 
 # regex patterns
 class RE:
-  DONGLE_ID =  r'(?P<dongle_id>[a-z0-9]{16})'
+  DONGLE_ID =  r'(?P<dongle_id>[a-f0-9]{16})'
   TIMESTAMP = r'(?P<timestamp>[0-9]{4}-[0-9]{2}-[0-9]{2}--[0-9]{2}-[0-9]{2}-[0-9]{2})'
-  LOG_ID_V2 = r'(?P<count>[a-z0-9]{8})--(?P<uid>[a-z0-9]{10})'
+  LOG_ID_V2 = r'(?P<count>[a-f0-9]{8})--(?P<uid>[a-z0-9]{10})'
   LOG_ID = r'(?P<log_id>(?:{}|{}))'.format(TIMESTAMP, LOG_ID_V2)
   ROUTE_NAME = r'(?P<route_name>{}[|_/]{})'.format(DONGLE_ID, LOG_ID)
   SEGMENT_NAME = r'{}(?:--|/)(?P<segment_num>[0-9]+)'.format(ROUTE_NAME)