diff --git a/modules/flow_logs/main.tf b/modules/flow_logs/main.tf
index 02e3cfa..0a70967 100644
--- a/modules/flow_logs/main.tf
+++ b/modules/flow_logs/main.tf
@@ -40,7 +40,7 @@ resource "aws_flow_log" "main" {
   log_destination_type = var.flow_log_definition.log_destination_type
   traffic_type         = var.flow_log_definition.traffic_type
   vpc_id               = var.vpc_id
-
+  log_format           = var.flow_log_definition.log_format
   dynamic "destination_options" {
     for_each = var.flow_log_definition.log_destination_type == "s3" ? [true] : []
 
diff --git a/variables.tf b/variables.tf
index f40d491..238fc9c 100644
--- a/variables.tf
+++ b/variables.tf
@@ -265,11 +265,11 @@ variable "vpc_flow_logs" {
   description = "Whether or not to create VPC flow logs and which type. Options: \"cloudwatch\", \"s3\", \"none\". By default creates flow logs to `cloudwatch`. Variable overrides null value types for some keys, defined in defaults.tf."
 
   type = object({
-    name_override   = optional(string, "")
-    log_destination = optional(string)
-    iam_role_arn    = optional(string)
-    kms_key_id      = optional(string)
-
+    name_override        = optional(string, "")
+    log_destination      = optional(string)
+    iam_role_arn         = optional(string)
+    kms_key_id           = optional(string)
+    log_format           = optional(string)
     log_destination_type = string
     retention_in_days    = optional(number)
     tags                 = optional(map(string))