diff --git a/src/providers/deepseek.rs b/src/providers/deepseek.rs
index 611294cd..04993597 100644
--- a/src/providers/deepseek.rs
+++ b/src/providers/deepseek.rs
@@ -113,7 +113,8 @@ impl super::Provider for DeepSeekProvider {
     ) -> Result<BoxStream<'static, Result<ProviderStreamChunk, AppError>>, AppError> {
         // DeepSeek doesn't support images in streaming, use text-only
         let messages_json = helpers::messages_to_openai_json_text_only(&request.messages).await?;
-        let body = helpers::build_openai_body(&request, messages_json, true);
+        let mut body = helpers::build_openai_body(&request, messages_json, true);
+        body.as_object_mut().expect("body is object").remove("stream_options");
 
         let es = reqwest_eventsource::EventSource::new(
             self.client