diff --git a/modules/runners/scale-up.tf b/modules/runners/scale-up.tf
index 534b7daa64..858224bf5a 100644
--- a/modules/runners/scale-up.tf
+++ b/modules/runners/scale-up.tf
@@ -32,7 +32,7 @@ resource "aws_lambda_function" "scale_up" {
       NODE_TLS_REJECT_UNAUTHORIZED         = var.ghes_url != null && !var.ghes_ssl_verify ? 0 : 1
       PARAMETER_GITHUB_APP_ID_NAME         = var.github_app_parameters.id.name
       PARAMETER_GITHUB_APP_KEY_BASE64_NAME = var.github_app_parameters.key_base64.name
-      RUNNER_EXTRA_LABELS                  = var.runner_extra_labels
+      RUNNER_EXTRA_LABELS                  = lower(var.runner_extra_labels)
       RUNNER_GROUP_NAME                    = var.runner_group_name
       RUNNERS_MAXIMUM_COUNT                = var.runners_maximum_count
       SUBNET_IDS                           = join(",", var.subnet_ids)
diff --git a/modules/webhook/lambdas/webhook/src/webhook/handler.test.ts b/modules/webhook/lambdas/webhook/src/webhook/handler.test.ts
index 3a4b98ef68..929f09f6d3 100644
--- a/modules/webhook/lambdas/webhook/src/webhook/handler.test.ts
+++ b/modules/webhook/lambdas/webhook/src/webhook/handler.test.ts
@@ -129,7 +129,7 @@ describe('handler', () => {
         ...workflowjob_event,
         workflow_job: {
           ...workflowjob_event.workflow_job,
-          labels: ['self-hosted', 'test'],
+          labels: ['self-hosted', 'Test'],
         },
       });
       const resp = await handle(
@@ -141,7 +141,7 @@ describe('handler', () => {
     });
 
     it('Check runner labels accept job with mixed order.', async () => {
-      process.env.RUNNER_LABELS = '["linux", "test", "self-hosted"]';
+      process.env.RUNNER_LABELS = '["linux", "TEST", "self-hosted"]';
       process.env.ENABLE_WORKFLOW_JOB_LABELS_CHECK = 'true';
       process.env.WORKFLOW_JOB_LABELS_CHECK_ALL = 'true';
       const event = JSON.stringify({
diff --git a/modules/webhook/lambdas/webhook/src/webhook/handler.ts b/modules/webhook/lambdas/webhook/src/webhook/handler.ts
index 7394797236..08dbc51088 100644
--- a/modules/webhook/lambdas/webhook/src/webhook/handler.ts
+++ b/modules/webhook/lambdas/webhook/src/webhook/handler.ts
@@ -84,7 +84,7 @@ function readEnvironmentVariables() {
   const workflowLabelCheckAll = JSON.parse(workflowLabelCheckAllEnv) as boolean;
   const repositoryWhiteListEnv = process.env.REPOSITORY_WHITE_LIST || '[]';
   const repositoryWhiteList = JSON.parse(repositoryWhiteListEnv) as Array<string>;
-  const runnerLabelsEnv = process.env.RUNNER_LABELS || '[]';
+  const runnerLabelsEnv = (process.env.RUNNER_LABELS || '[]').toLowerCase();
   const runnerLabels = JSON.parse(runnerLabelsEnv) as Array<string>;
   return { environment, repositoryWhiteList, enableWorkflowLabelCheck, workflowLabelCheckAll, runnerLabels };
 }
@@ -178,8 +178,8 @@ function isRepoNotAllowed(repoFullName: string, repositoryWhiteList: string[]):
 function canRunJob(job: WorkflowJobEvent, runnerLabels: string[], workflowLabelCheckAll: boolean): boolean {
   const workflowJobLabels = job.workflow_job.labels;
   const match = workflowLabelCheckAll
-    ? workflowJobLabels.every((l) => runnerLabels.includes(l))
-    : workflowJobLabels.some((l) => runnerLabels.includes(l));
+    ? workflowJobLabels.every((l) => runnerLabels.includes(l.toLowerCase()))
+    : workflowJobLabels.some((l) => runnerLabels.includes(l.toLowerCase()));
 
   logger.debug(
     `Received workflow job event with labels: '${JSON.stringify(workflowJobLabels)}'. The event does ${
diff --git a/modules/webhook/webhook.tf b/modules/webhook/webhook.tf
index da55ed1f8e..abe2eccb34 100644
--- a/modules/webhook/webhook.tf
+++ b/modules/webhook/webhook.tf
@@ -19,7 +19,7 @@ resource "aws_lambda_function" "webhook" {
       LOG_LEVEL                        = var.log_level
       LOG_TYPE                         = var.log_type
       REPOSITORY_WHITE_LIST            = jsonencode(var.repository_white_list)
-      RUNNER_LABELS                    = jsonencode(split(",", var.runner_labels))
+      RUNNER_LABELS                    = jsonencode(split(",", lower(var.runner_labels)))
       SQS_URL_WEBHOOK                  = var.sqs_build_queue.id
       SQS_IS_FIFO                      = var.sqs_build_queue_fifo
     }