diff --git a/config/default/hmc_values.yaml b/config/default/hmc_values.yaml
index b46ab475f..e419bdde4 100644
--- a/config/default/hmc_values.yaml
+++ b/config/default/hmc_values.yaml
@@ -2,6 +2,9 @@
 cert-manager:
   enabled: true
   installCRDs: true
+  global:
+    leaderElection:
+      namespace: hmc-system
 
 flux2:
   enabled: true