diff --git a/quickstart/101-machine-learning/compute.tf b/quickstart/101-machine-learning/compute.tf
index ea69fc749..d35fc64c1 100644
--- a/quickstart/101-machine-learning/compute.tf
+++ b/quickstart/101-machine-learning/compute.tf
@@ -3,6 +3,7 @@ resource "random_string" "ci_prefix" {
   length  = 8
   upper   = false
   special = false
+  numeric = false
 }
 
 # Compute instance
@@ -31,4 +32,4 @@ resource "azurerm_machine_learning_compute_cluster" "compute" {
     scale_down_nodes_after_idle_duration = "PT15M" # 15 minutes
   }
 
-}
\ No newline at end of file
+}