diff --git a/PyU4V/__init__.py b/PyU4V/__init__.py
index bb0e10b5..b71ef5b5 100644
--- a/PyU4V/__init__.py
+++ b/PyU4V/__init__.py
@@ -8,7 +8,7 @@
 
 from .univmax_conn import U4VConn  # noqa: F401
 __title__ = 'pyu4v'
-__version__ = '3.1.4'
+__version__ = '3.1.5'
 __author__ = 'Dell EMC or its subsidiaries'
 __license__ = 'MIT'
 __copyright__ = 'Copyright 2019 Dell EMC Inc'
diff --git a/PyU4V/rest_requests.py b/PyU4V/rest_requests.py
index b2fc8fd9..4c4f3aa4 100644
--- a/PyU4V/rest_requests.py
+++ b/PyU4V/rest_requests.py
@@ -48,7 +48,7 @@ def __init__(self, username, password, verify, base_url,
         self.base_url = base_url
         self.headers = {'content-type': 'application/json',
                         'accept': 'application/json',
-                        'application_type': application_type}
+                        'application-type': application_type}
         self.timeout = 120
         self.session = self.establish_rest_session()
 
diff --git a/README.rst b/README.rst
index f57a1ac5..14525f19 100644
--- a/README.rst
+++ b/README.rst
@@ -12,7 +12,7 @@ eg: https://10.0.0.1:8443/univmax/restapi/docs.
 
 VERSION 3
 
-Please note that version '3.1.4' of the library is NOT BACKWARDS
+Please note that version '3.1.5' of the library is NOT BACKWARDS
 COMPATIBLE with scripts written with version 2.x of PyU4V, and does not
 support any Unisphere for VMAX version earlier than 8.4 - PyU4V version 2.0.2.6 is
 still available on Pip, and there is a 'stable/2.0' branch available on Github.
diff --git a/setup.py b/setup.py
index f84992c8..59b980f7 100644
--- a/setup.py
+++ b/setup.py
@@ -23,7 +23,7 @@
 from setuptools import setup
 
 setup(name='PyU4V',
-      version='3.1.4',
+      version='3.1.5',
       url='https://github.com/MichaelMcAleer/PyU4V/',
       author='Dell Inc. or its subsidiaries',
       author_email='Michael.Mcaleer@dell.com',
diff --git a/tests/test_pyu4v.py b/tests/test_pyu4v.py
index 21704578..47cdc57a 100644
--- a/tests/test_pyu4v.py
+++ b/tests/test_pyu4v.py
@@ -501,6 +501,15 @@ def _get_request(self, url, params):
 
         return status_code, return_object
 
+    def _establish_rest_session(self):
+        ref_headers = {'content-type': 'application/json',
+                       'accept': 'application/json',
+                       'application-type': 'pyu4v'}
+        self.assertEqual(ref_headers, self.rest.session.headers)
+        self.assertEqual('smc', self.rest.session.auth.username)
+        self.assertEqual('smc', self.rest.session.auth.password)
+        self.assertEqual(False, self.rest.session.verify)
+
     def _sloprovisioning_volume(self, url, params):
         return_object = self.data.volume_list[2]
         if params: