diff --git a/astrbot/core/provider/sources/openai_embedding_source.py b/astrbot/core/provider/sources/openai_embedding_source.py
index 9bf127766f..ae531996ae 100644
--- a/astrbot/core/provider/sources/openai_embedding_source.py
+++ b/astrbot/core/provider/sources/openai_embedding_source.py
@@ -27,8 +27,8 @@ def __init__(self, provider_config: dict, provider_settings: dict) -> None:
         api_base = (
             provider_config.get("embedding_api_base", "https://api.openai.com/v1")
             .strip()
-            .rstrip("/")
-            .rstrip("/embeddings")
+            .removesuffix("/")
+            .removesuffix("/embeddings")
         )
         if api_base and not api_base.endswith("/v1") and not api_base.endswith("/v4"):
             # /v4 see #5699