diff --git a/tooz/drivers/redis.py b/tooz/drivers/redis.py
index 61da0381..11a4ab3b 100644
--- a/tooz/drivers/redis.py
+++ b/tooz/drivers/redis.py
@@ -422,11 +422,11 @@ return 1
     @classmethod
     def _parse_sentinel(cls, sentinel):
         # IPv6 (eg. [::1]:6379 )
-        match = re.search(r'\[(\S+)\]:(\d+)', sentinel)
+        match = re.search(r'^\[(\S+)\]:(\d+)$', sentinel)
         if match:
             return (match[1], int(match[2]))
         # IPv4 or hostname (eg. 127.0.0.1:6379 or localhost:6379)
-        match = re.search(r'(\S+):(\d+)', sentinel)
+        match = re.search(r'^(\S+):(\d+)$', sentinel)
         if match:
             return (match[1], int(match[2]))
         raise ValueError('Malformed sentinel server format')