diff --git a/docs/source/distributions/building_distro.md b/docs/source/distributions/building_distro.md
index bdc91f6f37..c4833a31a2 100644
--- a/docs/source/distributions/building_distro.md
+++ b/docs/source/distributions/building_distro.md
@@ -194,7 +194,7 @@ positional arguments:
 
 options:
   -h, --help            show this help message and exit
-  --port PORT           Port to run the server on. Defaults to 8321
+  --port PORT           Port to run the server on. It can also be passed via the env var LLAMA_STACK_PORT. Defaults to 8321
   --image-name IMAGE_NAME
                         Name of the image to run. Defaults to the current conda environment
   --disable-ipv6        Disable IPv6 support
diff --git a/llama_stack/cli/stack/run.py b/llama_stack/cli/stack/run.py
index 7d6af8120b..e4337b8d02 100644
--- a/llama_stack/cli/stack/run.py
+++ b/llama_stack/cli/stack/run.py
@@ -37,7 +37,7 @@ def _add_arguments(self):
         self.parser.add_argument(
             "--port",
             type=int,
-            help="Port to run the server on. Defaults to 8321",
+            help="Port to run the server on. It can also be passed via the env var LLAMA_STACK_PORT. Defaults to 8321",
             default=int(os.getenv("LLAMA_STACK_PORT", 8321)),
         )
         self.parser.add_argument(