diff --git a/modules/aws/networking/tgw-static-routes/main.tf b/modules/aws/networking/tgw-static-routes/main.tf
index c39635c..f821786 100644
--- a/modules/aws/networking/tgw-static-routes/main.tf
+++ b/modules/aws/networking/tgw-static-routes/main.tf
@@ -10,7 +10,7 @@ data "aws_ec2_transit_gateway_route_table" "tgw_rt" {
 
 # Read routes from the text file (routes.json)
 locals {
-  routes = jsondecode(var.static_routes_file)
+  routes = yamldecode(var.static_routes_file)
 }
 
 # Add static routes to the TGW route table using the data from the text file