diff --git a/src/openai/_base_client.py b/src/openai/_base_client.py
index 58490e4430..0e995353b3 100644
--- a/src/openai/_base_client.py
+++ b/src/openai/_base_client.py
@@ -1969,7 +1969,7 @@ def __init__(self, name: str) -> None:
 
     @override
     def __str__(self) -> str:
-        return f"other:{self.name}"
+        return "other:" + self.name
 
 
 Arch = Union[OtherArch, Literal["x32", "x64", "arm", "arm64", "unknown"]]