diff --git a/api-ref/source/parameters.yaml b/api-ref/source/parameters.yaml
index b5365832b0..ca2c78b243 100644
--- a/api-ref/source/parameters.yaml
+++ b/api-ref/source/parameters.yaml
@@ -368,8 +368,8 @@ clean_step:
 clean_steps:
   description: |
     An ordered list of cleaning steps that will be performed on the node. A
-    cleaning step is a dictionary with required keys ‘interface’ and ‘step’, and
-    optional key ‘args’. If specified, the value for ‘args’ is a keyword variable
+    cleaning step is a dictionary with required keys 'interface' and 'step', and
+    optional key 'args'. If specified, the value for 'args' is a keyword variable
     argument dictionary that is passed to the cleaning step method.
   in: body
   required: false