diff --git a/terraform/environments/dev/main.tf b/terraform/environments/dev/main.tf
index ed4305e..9a9ed5d 100644
--- a/terraform/environments/dev/main.tf
+++ b/terraform/environments/dev/main.tf
@@ -29,10 +29,10 @@ module "network" {
 module "compute" {
   source = "../../modules/compute"
 
-    #autres variables spécifiques au module
-    instance_type = var.instance_type
-    zone = var.zone
-    frontend_subnet = var.frontend_subnet
-    backend_subnet = var.backend_subnet
-    database_subnet = var.database_subnet
+  #autres variables spécifiques au module
+  instance_type = var.instance_type
+  zone = var.zone
+  frontend_subnet = module.network.subnet_id["frontend"]
+  backend_subnet = module.network.subnet_id["backend"]
+  database_subnet = module.network.subnet_id["database"]
 }
\ No newline at end of file
diff --git a/terraform/environments/dev/variables.tf b/terraform/environments/dev/variables.tf
index 49c6404..b2b6955 100644
--- a/terraform/environments/dev/variables.tf
+++ b/terraform/environments/dev/variables.tf
@@ -44,22 +44,4 @@ variable "zone" {
     description = "zone"
     type        = string
     default     = "europe-west4-b"
-}
-
-variable "frontend_subnet" {
-    description = "sous réseau frontend"
-    type        = string
-    default     = "frontend"
-}
-
-variable "backend_subnet" {
-    description = "sous réseau backend"
-    type        = string
-    default     = "backend"
-}
-
-variable "database_subnet" {
-    description = "sous réseau database"
-    type        = string
-    default     = "database"
 }
\ No newline at end of file