diff --git a/app/terraform/proxy/fastly.py b/app/terraform/proxy/fastly.py
index 0261416..07c5d93 100644
--- a/app/terraform/proxy/fastly.py
+++ b/app/terraform/proxy/fastly.py
@@ -76,7 +76,7 @@ class ProxyFastlyAutomation(ProxyAutomation):
 
       backend {
         address       = "{{ proxy.origin.domain_name }}"
-        name          = "{{ proxy.origin.domain_name.replace(".", "_") }}_{{ proxy.id }}"
+        name          = "{{ proxy.origin.domain_name.replace(".", "_").replace("-", "_") }}_{{ proxy.id }}"
         port          = 443
         ssl_hostname  = "{{ proxy.origin.domain_name }}"
         override_host = "{{ proxy.origin.domain_name }}"
@@ -95,7 +95,7 @@ class ProxyFastlyAutomation(ProxyAutomation):
             {% for proxy in origin.proxies %}
             {% if proxy.destroyed == None and proxy.provider == "fastly" and proxy.psg == subgroup %}
             else if (req.http.host == "{{ proxy.slug }}.global.ssl.fastly.net") {
-              set req.backend = F_{{ origin.domain_name.replace(".", "_") }}_{{ proxy.id }};
+              set req.backend = F_{{ origin.domain_name.replace(".", "_").replace("-", "_") }}_{{ proxy.id }};
               if (req.request != "HEAD" && req.request != "GET" && req.request != "FASTLYPURGE") {
                 return(pass);
               }