diff --git a/conversion/response/chatgpt/convert.go b/conversion/response/chatgpt/convert.go
index 2262c99..366e332 100644
--- a/conversion/response/chatgpt/convert.go
+++ b/conversion/response/chatgpt/convert.go
@@ -1,17 +1,16 @@
 package chatgpt
 
 import (
+	"freechatgpt/typings"
 	chatgpt_types "freechatgpt/typings/chatgpt"
 	official_types "freechatgpt/typings/official"
 	"strings"
 )
 
-var Previous_text string
-
-func ConvertToString(chatgpt_response *chatgpt_types.ChatGPTResponse) string {
-	translated_response := official_types.NewChatCompletionChunk(strings.ReplaceAll(chatgpt_response.Message.Content.Parts[0], Previous_text, ""))
+func ConvertToString(chatgpt_response *chatgpt_types.ChatGPTResponse, previous_text *typings.StringStruct) string {
+	translated_response := official_types.NewChatCompletionChunk(strings.ReplaceAll(chatgpt_response.Message.Content.Parts[0], *&previous_text.Text, ""))
 	translated_response.Choices[0].Delta.Role = chatgpt_response.Message.Author.Role
-	Previous_text = chatgpt_response.Message.Content.Parts[0]
+	previous_text.Text = chatgpt_response.Message.Content.Parts[0]
 	return "data: " + translated_response.String() + "\n\n"
 
 }
diff --git a/internal/chatgpt/request.go b/internal/chatgpt/request.go
index 8f0f9a6..8e78bbf 100644
--- a/internal/chatgpt/request.go
+++ b/internal/chatgpt/request.go
@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"bytes"
 	"encoding/json"
+	"freechatgpt/typings"
 	chatgpt_types "freechatgpt/typings/chatgpt"
 	"io"
 	"math/rand"
@@ -155,6 +156,7 @@ func Handler(c *gin.Context, response *http.Response, token string, translated_r
 		c.Header("Content-Type", "application/json")
 	}
 	var finish_reason string
+	var previous_text typings.StringStruct
 	var original_response chatgpt_types.ChatGPTResponse
 	counter := 0
 	for {
@@ -191,7 +193,7 @@ func Handler(c *gin.Context, response *http.Response, token string, translated_r
 				counter++
 				continue
 			}
-			response_string := chatgpt_response_converter.ConvertToString(&original_response)
+			response_string := chatgpt_response_converter.ConvertToString(&original_response, &previous_text)
 			if stream {
 				_, err = c.Writer.WriteString(response_string)
 				if err != nil {
@@ -216,9 +218,9 @@ func Handler(c *gin.Context, response *http.Response, token string, translated_r
 		}
 	}
 	if !max_tokens {
-		return chatgpt_response_converter.Previous_text, nil
+		return previous_text.Text, nil
 	}
-	return chatgpt_response_converter.Previous_text, &ContinueInfo{
+	return previous_text.Text, &ContinueInfo{
 		ConversationID: original_response.ConversationID,
 		ParentID:       original_response.Message.ID,
 	}
diff --git a/typings/typings.go b/typings/typings.go
index 6de2663..044a5ea 100644
--- a/typings/typings.go
+++ b/typings/typings.go
@@ -4,3 +4,7 @@ type GenericResponseLine struct {
 	Line  string `json:"line"`
 	Error string `json:"error"`
 }
+
+type StringStruct struct {
+	Text string `json:"text"`
+}