diff --git a/modules/network/main.tf b/modules/network/main.tf
index 6baee7d..a035a13 100644
--- a/modules/network/main.tf
+++ b/modules/network/main.tf
@@ -26,7 +26,7 @@ resource "google_compute_subnetwork" "subnet_db" {
 }
 
 resource "google_compute_firewall" "allow_http" {
-  name    = "allow_http"
+  name    = "allow-http"
   network = google_compute_network.vpc.id
 
   allow {
@@ -52,7 +52,7 @@ resource "google_compute_firewall" "allow_ssh" {
 }
 
 resource "google_compute_firewall" "allow_frontend_to_backend" {
-  name    = "allow_frontend_to_backend"
+  name    = "allow-frontend-to-backend"
   network = google_compute_network.vpc.id
 
   allow {
@@ -65,7 +65,7 @@ resource "google_compute_firewall" "allow_frontend_to_backend" {
 } 
 
 resource "google_compute_firewall" "allow_backend_to_database" {
-  name    = "allow_backend_to_database"
+  name    = "allow-backend-to-database"
   network = google_compute_network.vpc.id
 
   allow {