diff --git a/engineering-guide/puppet/components/sysctl.rst b/engineering-guide/puppet/components/sysctl.rst
index 1deab796..59beb180 100644
--- a/engineering-guide/puppet/components/sysctl.rst
+++ b/engineering-guide/puppet/components/sysctl.rst
@@ -10,9 +10,9 @@ The sysctl module is called automatically so is possible to do sysctl tuning
 by configuring properly hiera using the `sysctl::values` variable, eg.::
 
   sysctl::values:
-  net.ipv4.tcp_slow_start_after_idle:
-    value: '0' 
-  net.core.rmem_max:
-    value: '83886080'
-  net.core.wmem_max:
-    value: '83886080'
+    net.ipv4.tcp_slow_start_after_idle:
+      value: '0' 
+    net.core.rmem_max:
+      value: '83886080'
+    net.core.wmem_max:
+      value: '83886080'