diff --git a/environments/dev/main.tf b/environments/dev/main.tf
index e75c4d5..a21a2e3 100644
--- a/environments/dev/main.tf
+++ b/environments/dev/main.tf
@@ -41,9 +41,9 @@ module "compute" {
   zone = var.zone
   instance_type = var.instance_type
 
-  frontend_subnet_id = module.network.id_subnetwork["frontend"]
-  backend_subnet_id = module.network.id_subnetwork["backend"]
-  database_subnet_id = module.network.id_subnetwork["database"]
+  sub1 = module.network.subnet["frontend"]
+  sub2 = module.network.subnet["backend"]
+  sub3 = module.network.subnet["database"]
 
 
 
diff --git a/modules/compute/main.tf b/modules/compute/main.tf
index 3b50357..2fc3959 100644
--- a/modules/compute/main.tf
+++ b/modules/compute/main.tf
@@ -10,7 +10,7 @@ resource "google_compute_instance" "vm-front" {
     }
   }
   network_interface {
-    subnetwork = google_compute_network.frontend_subnet_id
+    subnetwork = var.sub1
     access_config {} # IP publique
   }
 
@@ -35,7 +35,7 @@ resource "google_compute_instance" "vm-back" {
   }
 
   network_interface {
-    subnetwork = google_compute_network.backend_subnet_id
+    subnetwork = var.sub2
     access_config {} # IP publique
   }
 
@@ -59,7 +59,7 @@ resource "google_compute_instance" "vm-database" {
   }
 
   network_interface {
-    subnetwork = google_compute_network.database_subnet_id
+    subnetwork = var.sub3
     access_config {} # IP publique
   }
 
diff --git a/modules/compute/variables.tf b/modules/compute/variables.tf
index e12b2b7..2258d02 100644
--- a/modules/compute/variables.tf
+++ b/modules/compute/variables.tf
@@ -28,4 +28,20 @@ variable "database_cidr" {
   default     = "10.0.3.0/24"
 }
 
+variable "sub1" {
+  description = "subnet front"
+  type        = string
+}
+
+
+variable "sub2" {
+  description = "subnet back"
+  type        = string
+}
+
+
+variable "sub3" {
+  description = "subnet database"
+  type        = string
+}
 
diff --git a/modules/network/outputs.tf b/modules/network/outputs.tf
index e763f74..0457b70 100644
--- a/modules/network/outputs.tf
+++ b/modules/network/outputs.tf
@@ -1 +1,11 @@
-# Output d'un module
+output "vpc"{
+    value = google_compute_network.vpc.id
+}
+
+output "subnet" {
+  value = {
+    frontend = google_compute_subnetwork.subnet_front.id,
+    backend = google_compute_subnetwork.subnet_back.id,
+    database = google_compute_subnetwork.subnet_db.id
+  }
+}
\ No newline at end of file