diff --git a/lib/nss.c b/lib/nss.c
index f5c69e6..d1a9d1a 100644
--- a/lib/nss.c
+++ b/lib/nss.c
@@ -1265,6 +1265,7 @@ CURLcode Curl_nss_connect(struct connectdata *conn, int sockindex)
   if(!connssl->handle)
     goto error;
   PR_Close(model); /* We don't need this any more */
+  model = NULL;
 
   /* This is the password associated with the cert that we're using */
   if (data->set.str[STRING_KEY_PASSWD]) {