diff --git a/server.py b/server.py
index 2fb0771..9117a1b 100644
--- a/server.py
+++ b/server.py
@@ -41,13 +41,13 @@ def loadcert_backend():
         if allowed_file(cert.filename) and allowed_file(privkey.filename):
             for i in os.listdir(homefolder + "/certs/"):
                 thisname = "-".join(i.split("-")[:-1])
-                if (open(homefolder + "/certs/" + thisname + "-privkey.pem").read() == privkeyy) and (open(homefolder + "/certs/" + thisname + "-chain.pem").read() == certt):
+                if (open(homefolder + "/certs/" + thisname + "-privkey.pem").read() == privkeyy.decode()) and (open(homefolder + "/certs/" + thisname + "-chain.pem").read() == certt.decode()):
                     resp = make_response('<meta name="viewport" content="width=device-width, initial-scale=1.0"><link rel="stylesheet" href="/style.css">The certificate seems to already exist, loading the used file.<br><br><p><a href="/" class=go style="color: white;">Go home</a></p>')
                     resp.set_cookie('certname',thisname)
                     return resp
             random_name = str(uuid.uuid4())
-            open(homefolder + "/certs/" + random_name + "-chain.pem", 'w').write(certt)
-            open(homefolder + "/certs/" + random_name + "-privkey.pem", 'w').write(privkeyy)
+            open(homefolder + "/certs/" + random_name + "-chain.pem", 'wb').write(certt)
+            open(homefolder + "/certs/" + random_name + "-privkey.pem", 'wb').write(privkeyy)
             resp = make_response('<meta name="viewport" content="width=device-width, initial-scale=1.0"><link rel="stylesheet" href="/style.css">Success!<br><br><p><a href="/" class=go style="color: white;">Go home</a></p>')
             resp.set_cookie('certname',random_name)
             return resp