diff --git a/modules/sqlite_local.py b/modules/sqlite_local.py
index 50a5129..03af7e4 100644
--- a/modules/sqlite_local.py
+++ b/modules/sqlite_local.py
@@ -31,4 +31,9 @@ class broker:
         hashed = self.fnet.encrypt(bytes(password, "UTF-8")).decode()
         db = self.conn.cursor()
         db.execute("INSERT INTO nickserv values(?, 'iw', ?, ?);", [nick, hashed, email])
-        self.conn.commit()
\ No newline at end of file
+        self.conn.commit()
+    def nickserv_isexist(self, nick):
+        db = self.conn.cursor()
+        db.execute("SELECT * FROM nickserv WHERE user=?;", [nick])
+        e = db.fetchall()
+        return e != []
\ No newline at end of file