diff --git a/src/pingintel_api/sov_fixer/sov_fixer_api_client.py b/src/pingintel_api/sov_fixer/sov_fixer_api_client.py
index 691bc5c..d3a5565 100644
--- a/src/pingintel_api/sov_fixer/sov_fixer_api_client.py
+++ b/src/pingintel_api/sov_fixer/sov_fixer_api_client.py
@@ -11,6 +11,7 @@
 import click
 
 from pingintel_api.api_client_base import APIClientBase
+from urllib.parse import urlparse, urlunparse
 
 from ..utils import is_fileobj, raise_for_status
 from . import types as t
@@ -134,6 +135,25 @@ def fix_sov_download(
         if not output_url.startswith("http"):
             assert output_url.startswith("/"), f"Invalid output URL: {output_url}"
             output_url = self.api_url + output_url
+        else:
+            # Ensure output_url uses the same port as self.api_url
+            api_parts = urlparse(self.api_url)
+            output_parts = urlparse(output_url)
+            api_port = api_parts.port
+            if api_port and (output_parts.port != api_port):
+                netloc = output_parts.hostname
+                if api_port:
+                    netloc += f":{api_port}"
+                output_url = urlunparse(
+                    (
+                        output_parts.scheme,
+                        netloc,
+                        output_parts.path,
+                        output_parts.params,
+                        output_parts.query,
+                        output_parts.fragment,
+                    )
+                )
 
         if self.environment and self.environment == "local2" and "api-local.sovfixer.com" in output_url:
             output_url = output_url.replace("api-local.sovfixer.com", "localhost:8000")