diff --git a/core/nginx/config.py b/core/nginx/config.py
index bd6967b9..d9cfe6a5 100755
--- a/core/nginx/config.py
+++ b/core/nginx/config.py
@@ -36,6 +36,8 @@ args["TLS"] = {
 
 def format_for_nginx(fullchain, output):
     """ We may want to strip ISRG Root X1 out """
+    if not os.path.exists(fullchain):
+        return
     certs = []
     with open(fullchain, 'r') as pem:
         cert = ''