diff --git a/README.md b/README.md
index c5e2124a1..6f912af09 100644
--- a/README.md
+++ b/README.md
@@ -460,6 +460,10 @@ Assignments other than simple attribution are not currently possible either, e.g
 ```
   vars += config
 ```
+but you can use the following instead:
+```
+  vars = vars + config
+```
 
 ### Apply Rules
 
diff --git a/lib/puppet_x/icinga2/utils.rb b/lib/puppet_x/icinga2/utils.rb
index f160b6bf2..4ba1d2c90 100644
--- a/lib/puppet_x/icinga2/utils.rb
+++ b/lib/puppet_x/icinga2/utils.rb
@@ -71,6 +71,10 @@
 #
 #   vars += config
 #
+# but you can use the following instead:
+#
+#   vars = vars + config
+#
 #
 require 'puppet'