diff --git a/pyproject.toml b/pyproject.toml
index 949c793..d7a1be6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "robonomics-interface"
-version = "1.6.0"
+version = "1.6.1"
 description = "Robonomics wrapper over https://github.com/polkascan/py-substrate-interface created to facilitate programming with Robonomics"
 authors = ["Pavel Tarasov <p040399@outlook.com>"]
 license = "Apache-2.0"
diff --git a/robonomicsinterface/classes/rws.py b/robonomicsinterface/classes/rws.py
index 1af4d22..9575cb6 100644
--- a/robonomicsinterface/classes/rws.py
+++ b/robonomicsinterface/classes/rws.py
@@ -101,7 +101,8 @@ def get_days_left(
         :param addr: Possible subscription owner. If ``None`` - account address.
         :param block_hash: Retrieves data as of passed block hash.
 
-        :return: Number of days left if subscription is active, ``False`` if no active subscription.
+        :return: Number of days left if subscription is active, ``False`` if no active subscription, -1 for a Lifetime
+            subscription.
 
         """
 
@@ -112,6 +113,8 @@ def get_days_left(
         ledger: LedgerTyping = self._service_functions.chainstate_query("RWS", "Ledger", address, block_hash=block_hash)
         if not ledger:
             return False
+        if "Lifetime" in ledger["kind"]:
+            return -1
         unix_time_sub_expire: int = ledger["issue_time"] + 86400 * 1000 * ledger["kind"]["Daily"]["days"]
         days_left: float = (unix_time_sub_expire - time.time() * 1000) / 86400000
         if days_left >= 0: