diff --git a/rest-api-templates/asterisk_processor.py b/rest-api-templates/asterisk_processor.py
index ad88ebba70..be1c6dd3a3 100644
--- a/rest-api-templates/asterisk_processor.py
+++ b/rest-api-templates/asterisk_processor.py
@@ -60,7 +60,7 @@ def snakify(name):
     for c in name:
         if c.isupper() and prior_lower:
             r += "_"
-        if c is '-':
+        if c == '-':
             c = '_'
         prior_lower = c.islower()
         r += c.lower()