diff --git a/i2plib/sam.py b/i2plib/sam.py
index 3a09076..224086a 100644
--- a/i2plib/sam.py
+++ b/i2plib/sam.py
@@ -1,8 +1,6 @@
 from base64 import b64decode, b64encode, b32encode
 from hashlib import sha256
 import struct
-import random
-import string
 import re
 
 
@@ -50,13 +48,6 @@ class Message(object):
         return self._reply_string
 
 
-def generate_session_id(length=6):
-    """Generate random session id"""
-    rand = random.SystemRandom()
-    sid = [rand.choice(string.ascii_letters) for _ in range(length)]
-    return "i2plib-" + "".join(sid)
-
-
 # SAM request messages
 
 def hello(min_version, max_version):
diff --git a/i2plib/tunnel.py b/i2plib/tunnel.py
index 2fdaeba..bd93044 100644
--- a/i2plib/tunnel.py
+++ b/i2plib/tunnel.py
@@ -45,7 +45,7 @@ class I2PTunnel(object):
                  options={}, loop=None, sam_address=i2plib.sam.DEFAULT_ADDRESS):
         self.local_address = local_address
         self.destination = destination
-        self.session_name = session_name or i2plib.sam.generate_session_id()
+        self.session_name = session_name or i2plib.utils.generate_session_id()
         self.options = options
         self.loop = loop
         self.sam_address = sam_address
diff --git a/i2plib/utils.py b/i2plib/utils.py
index a5f86f8..117bee6 100644
--- a/i2plib/utils.py
+++ b/i2plib/utils.py
@@ -1,5 +1,8 @@
 import socket
 import os
+import random
+import string
+
 import i2plib.sam
 
 def get_free_port():
@@ -31,3 +34,9 @@ def get_sam_address():
     value = os.getenv("I2P_SAM_ADDRESS")
     return address_from_string(value) if value else i2plib.sam.DEFAULT_ADDRESS
 
+def generate_session_id(length=6):
+    """Generate random session id"""
+    rand = random.SystemRandom()
+    sid = [rand.choice(string.ascii_letters) for _ in range(length)]
+    return "i2plib-" + "".join(sid)
+