diff --git a/README.md b/README.md
index fd19fac126f2cfd93fbcd84fba77dec9852cd102..fa59f452d6f92de6357a60ffa7c773099e11aae3 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ Fork the project from [this repository](https://forge.grandlyon.com/systemes-din
 Go to the `Settings` menu, `CI/CD` and look for the `Variables` submenu.  
 Once it's done, you will need to create the variable bellow :  
 - **ENVIRONMENT** : Environment of the deployment, contained in domains, subdomains and resources name convention, should match the project name.  
-- **TF_VAR_INSTANCES_COUNT** : Number of instances to create.  
+- **TF_VAR_INSTANCE_COUNT** : Number of instances to create.  
 - **TF_VAR_LETSENCRYPT_EMAIL** : Lets encrypt mail for renewal.  
 - **TF_VAR_PROJECT_DOMAIN** : External domain from Scaleway. Example : `<PROJECT_DOMAIN>.alpha.grandlyon.com`  
 - **TF_VAR_SCW_ACCESS_KEY** : Scaleway Access Key.  
diff --git a/terraform/main.tf b/terraform/main.tf
index f41e2aa481e5f89d4e9f17d56002f72a95e875de..b32beee8b99b1ac6c0ad65111b4f20e631657917 100644
--- a/terraform/main.tf
+++ b/terraform/main.tf
@@ -3,7 +3,7 @@
 ############
 
 resource "scaleway_instance_ip" "public_ip" {
-  count      = var.INSTANCES_COUNT
+  count      = var.INSTANCE_COUNT
   project_id = var.SCW_PROJECT_ID
 }
 
@@ -12,7 +12,7 @@ resource "scaleway_instance_ip" "public_ip" {
 ################
 
 resource "scaleway_domain_record" "subdomain_record" {
-  count    = var.INSTANCES_COUNT
+  count    = var.INSTANCE_COUNT
   dns_zone = var.PROJECT_DOMAIN
   name     = "${var.ENVIRONMENT}-${count.index}"
   type     = "A"
@@ -21,7 +21,7 @@ resource "scaleway_domain_record" "subdomain_record" {
 }
 
 resource "scaleway_domain_record" "host_subdomain_record" {
-  count    = var.INSTANCES_COUNT
+  count    = var.INSTANCE_COUNT
   dns_zone = var.PROJECT_DOMAIN
   name     = "*.${var.ENVIRONMENT}-${count.index}"
   type     = "A"
@@ -56,7 +56,7 @@ resource "scaleway_instance_security_group" "www" {
 ##############################
 
 resource "scaleway_instance_server" "user_instance_server" {
-  count             = var.INSTANCES_COUNT
+  count             = var.INSTANCE_COUNT
   project_id        = var.SCW_PROJECT_ID
   name              = "instance${count.index}-${var.ENVIRONMENT}"
   type              = "DEV1-L"
diff --git a/terraform/variables-gitlab.tf b/terraform/variables-gitlab.tf
index 6c31d72e31aac81dc3e0d800806fc51e060d1f58..16dff3cee52ff4972045dcde8f8c8dd4e948151a 100644
--- a/terraform/variables-gitlab.tf
+++ b/terraform/variables-gitlab.tf
@@ -36,7 +36,7 @@ variable "USER_PASSWORD" {
   description = "User password for accessing services"
 }
 
-variable "INSTANCES_COUNT" {
+variable "INSTANCE_COUNT" {
   type        = number
   description = "Number of instances to create"
 }