diff --git a/CHANGELOG.md b/CHANGELOG.md
index b7c6b40..74396bb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 _Changes in the next release_
 
+### Fixed
+- Environment variable `UC_INTEGRATION_HTTP_PORT` to override server port.
+
 ---
 
 ## v0.1.2 - 2023-11-07
diff --git a/ucapi/api.py b/ucapi/api.py
index 4318b49..d6ac2fc 100644
--- a/ucapi/api.py
+++ b/ucapi/api.py
@@ -82,11 +82,10 @@ async def init(
 
         # publishing interface, defaults to "0.0.0.0" if not set
         interface = os.getenv("UC_INTEGRATION_INTERFACE")
-        port = int(
-            os.getenv("UC_INTEGRATION_HTTP_PORT") or self._driver_info["port"]
-            if "port" in self._driver_info
-            else 9090
-        )
+        if os.getenv("UC_INTEGRATION_HTTP_PORT"):
+            port = int(os.getenv("UC_INTEGRATION_HTTP_PORT"))
+        else:
+            port = self._driver_info["port"] if "port" in self._driver_info else 9090
 
         _adjust_driver_url(self._driver_info, port)