diff --git a/cloudinit/sources/DataSourceAzure.py b/cloudinit/sources/DataSourceAzure.py
index f3c6452..1c214db 100755
--- a/cloudinit/sources/DataSourceAzure.py
+++ b/cloudinit/sources/DataSourceAzure.py
@@ -258,7 +258,7 @@ def get_hostname(hostname_command='hostname'):
 
 
 def set_hostname(hostname, hostname_command='hostname'):
-    subp.subp([hostname_command, hostname])
+    util.subp(['hostnamectl', 'set-hostname', str(hostname)])
 
 
 @azure_ds_telemetry_reporter