diff --git a/searx/webapp.py b/searx/webapp.py
index 040debb1a..e558f0fc1 100755
--- a/searx/webapp.py
+++ b/searx/webapp.py
@@ -932,7 +932,7 @@ function send_webchat(elem)
   .then(response => response.json())
   .then(data => {
     prompt = JSON.parse(atob( (/<div id="prompt" style="display:none">(.*?)<\/div>/).exec(data.infoboxes[0].content)[1] )  )
-    prompt.data.max_tokens -= parseInt(knowledge.length*1.2) 
+    prompt.data.max_tokens -= parseInt(knowledge.length*1.4) 
     prompt.data.prompt = knowledge + prompt.data.prompt
     optionsweb = {
         method: "POST",
@@ -1198,7 +1198,7 @@ fetch("https://api.openai.com/v1/engines/text-davinci-003/completions", optionsI
                             method: "POST",
                             headers: headers,
                             body: JSON.stringify({
-                                "prompt":  document.querySelector("#chat").innerHTML.replace(/<a.*?>.*?<\/a.*?>/g, '').replace(/<hr.*/gs, '').replace(/<[^>]+>/g,"").replace(/\n\n/g,"\n") +"\n" + '以上是“''' + original_search_query + r'''”的网络知识。给出需要更多网络知识才能回答的，不含代词的完整问题，json数组格式["q1","q2","q3","q4"]：',
+                                "prompt":  document.querySelector("#chat").innerHTML.replace(/<a.*?>.*?<\/a.*?>/g, '').replace(/<hr.*/gs, '').replace(/<[^>]+>/g,"").replace(/\n\n/g,"\n") +"\n" + '以上是“''' + original_search_query + r'''”的网络知识。给出需要更多网络知识才能回答的，不含代词的完整独立问题，json数组格式["q1","q2","q3","q4"]：',
                                 "max_tokens": 1500,
                                 "temperature": 0.7,
                                 "top_p": 1,