diff --git a/Dropchat.py b/Dropchat.py
index 21f529a..9b11e79 100644
--- a/Dropchat.py
+++ b/Dropchat.py
@@ -144,8 +144,8 @@ class applicazione(tkinter.Frame):
 	
 	#copia il file nel buffer
 	def aggiorna(self):
-		self.temp.close()
-		self.temp = tempfile.TemporaryFile(mode="w+t")
+		self.temp.seek(0)
+		self.temp.truncate()
 		if self.file != "":
 			with open(self.file) as testo:
 				self.temp.write(testo.read())