diff --git a/src/client/azure_openai.rs b/src/client/azure_openai.rs
index e64277f..367b0ea 100644
--- a/src/client/azure_openai.rs
+++ b/src/client/azure_openai.rs
@@ -18,7 +18,7 @@ pub struct AzureOpenAIConfig {
 impl AzureOpenAIClient {
     config_get_fn!(api_base, get_api_base);
     config_get_fn!(api_key, get_api_key);
-    
+
     create_client_config!([
         (
             "api_base",
diff --git a/src/client/vertexai.rs b/src/client/vertexai.rs
index d4be930..06fc43b 100644
--- a/src/client/vertexai.rs
+++ b/src/client/vertexai.rs
@@ -119,7 +119,11 @@ fn prepare_chat_completions(
             format!("{base_url}/google/models/{model_name}:{func}")
         }
         ModelCategory::Claude => {
-            format!("{base_url}/anthropic/models/{model_name}:streamRawPredict")
+            let func = match data.stream {
+                true => "streamRawPredict",
+                false => "rawPredict",
+            };
+            format!("{base_url}/anthropic/models/{model_name}:{func}")
         }
         ModelCategory::Mistral => {
             let func = match data.stream {
diff --git a/src/rag/mod.rs b/src/rag/mod.rs
index 19cc6f2..05c13ef 100644
--- a/src/rag/mod.rs
+++ b/src/rag/mod.rs
@@ -16,8 +16,8 @@ use parking_lot::RwLock;
 use serde::{Deserialize, Serialize};
 use serde_json::json;
 use std::{
-    collections::HashMap, env, fmt, fmt::Debug, fs, hash::Hash, path::Path, sync::Arc,
-    time::Duration,
+    cmp::Ordering, collections::HashMap, env, fmt, fmt::Debug, fs, hash::Hash, path::Path,
+    sync::Arc, time::Duration,
 };
 use tokio::time::sleep;
 
@@ -1196,7 +1196,7 @@ fn reciprocal_rank_fusion(
         }
     }
     let mut sorted_items: Vec<(DocumentId, f32)> = map.into_iter().collect();
-    sorted_items.sort_by(|a, b| b.1.partial_cmp(&a.1).unwrap());
+    sorted_items.sort_by(|a, b| b.1.partial_cmp(&a.1).unwrap_or(Ordering::Equal));
 
     sorted_items
         .into_iter()