diff --git a/outputs.tf b/outputs.tf
index ea9e778c2..80c8a2ad8 100644
--- a/outputs.tf
+++ b/outputs.tf
@@ -250,7 +250,7 @@ output "database_route_table_ids" {
 
 output "redshift_route_table_ids" {
   description = "List of IDs of redshift route tables"
-  value       = try(coalescelist(aws_route_table.redshift[*].id, aws_route_table.public[*].id, aws_route_table.private[*].id), [])
+  value       = length(aws_route_table.redshift[*].id) > 0 ? aws_route_table.redshift[*].id : (var.enable_public_redshift ? aws_route_table.public[*].id : aws_route_table.private[*].id)
 }
 
 output "elasticache_route_table_ids" {