diff --git a/src/interactive/HISTORY.rst b/src/interactive/HISTORY.rst
index 8a34885c417..73bcfeaf3e6 100644
--- a/src/interactive/HISTORY.rst
+++ b/src/interactive/HISTORY.rst
@@ -3,6 +3,10 @@
 Release History
 ===============
 
+0.4.4
++++++
+* Remove dependency of azure-cli-core's ENV_ADDITIONAL_USER_AGENT
+
 0.4.3
 +++++
 * Fix config problem in interactive
diff --git a/src/interactive/azext_interactive/azclishell/__init__.py b/src/interactive/azext_interactive/azclishell/__init__.py
index d8ac255f4d5..433a3fca693 100644
--- a/src/interactive/azext_interactive/azclishell/__init__.py
+++ b/src/interactive/azext_interactive/azclishell/__init__.py
@@ -3,4 +3,4 @@
 # Licensed under the MIT License. See License.txt in the project root for license information.
 # --------------------------------------------------------------------------------------------
 
-VERSION = '0.4.3'
+VERSION = '0.4.4'
diff --git a/src/interactive/azext_interactive/azclishell/app.py b/src/interactive/azext_interactive/azclishell/app.py
index e0f92a5aa15..e0c7c9519c2 100644
--- a/src/interactive/azext_interactive/azclishell/app.py
+++ b/src/interactive/azext_interactive/azclishell/app.py
@@ -17,7 +17,6 @@
 from six.moves import configparser
 from knack.log import get_logger
 from knack.util import CLIError
-from azure.cli.core.commands.client_factory import ENV_ADDITIONAL_USER_AGENT
 from azure.cli.core._profile import _SUBSCRIPTION_NAME, Profile
 from azure.cli.core._session import ACCOUNT, CONFIG, SESSION
 from azure.cli.core.api import get_config_dir
@@ -53,6 +52,7 @@
 PART_SCREEN_EXAMPLE = .3
 START_TIME = datetime.datetime.utcnow()
 CLEAR_WORD = get_os_clear_screen_word()
+_ENV_ADDITIONAL_USER_AGENT = 'AZURE_HTTP_USER_AGENT'
 
 logger = get_logger(__name__)
 
@@ -98,7 +98,10 @@ def __init__(self, cli_ctx, style=None, completer=None,
             self.completer = AzCompleter(self, None)
             self.lexer = None
         self.history = history or FileHistory(os.path.join(self.config.get_config_dir(), self.config.get_history()))
-        os.environ[ENV_ADDITIONAL_USER_AGENT] = 'AZURECLISHELL/' + VERSION
+        if os.environ.get(_ENV_ADDITIONAL_USER_AGENT):
+            os.environ[_ENV_ADDITIONAL_USER_AGENT] += ' AZURECLISHELL/' + VERSION
+        else:
+            os.environ[_ENV_ADDITIONAL_USER_AGENT] = 'AZURECLISHELL/' + VERSION
 
         # OH WHAT FUN TO FIGURE OUT WHAT THESE ARE!
         self._cli = None