diff --git a/src/ltdproxy/handlers/external.py b/src/ltdproxy/handlers/external.py
index 217c13b..98c2459 100644
--- a/src/ltdproxy/handlers/external.py
+++ b/src/ltdproxy/handlers/external.py
@@ -206,7 +206,10 @@ async def get_s3(
             logger.debug("is png")
             response_headers["Content-type"] = "image/png"
         else:
-            logger.debug("did not change response content-type")
+            logger.warning(
+                "Did not change response content-type",
+                response_headers=response_headers,
+            )
 
         logger.debug("response headers", headers=response_headers)
 
diff --git a/src/ltdproxy/rewrites.py b/src/ltdproxy/rewrites.py
index ea674be..83d753a 100644
--- a/src/ltdproxy/rewrites.py
+++ b/src/ltdproxy/rewrites.py
@@ -84,11 +84,7 @@ async def build_response(self, path: str) -> Optional[StreamingResponse]:
             return None
 
         stream_headers = stream.headers
-        response_headers = {}
-        copy_headers = ("Content-Type", "Content-length")
-        for key in copy_headers:
-            if key in stream_headers:
-                response_headers[key] = stream_headers[key]
+        response_headers = dict(stream_headers)
 
         return StreamingResponse(
             stream.aiter_raw(),