diff --git a/roles/azure_edges/tasks/azure_cedge_vm.yml b/roles/azure_edges/tasks/azure_cedge_vm.yml
index 56ef52b..491af88 100644
--- a/roles/azure_edges/tasks/azure_cedge_vm.yml
+++ b/roles/azure_edges/tasks/azure_cedge_vm.yml
@@ -2,6 +2,10 @@
 # GNU General Public License v3.0+ (see LICENSE or https://www.gnu.org/licenses/gpl-3.0.txt)
 
 ---
+- name: "Replace underscores with hyphens in the az_resources_prefix string"
+  ansible.builtin.set_fact:
+    az_resources_prefix: "{{ az_resources_prefix | replace('_', '-') }}"
+    hostname: "{{ hostname | replace('_', '-') }}"
 
 - name: "Create public IP addresses for machine: {{ hostname }}"
   azure.azcollection.azure_rm_publicipaddress: