diff --git a/roles/burp-server/templates/burp-server.conf.j2 b/roles/burp-server/templates/burp-server.conf.j2
index 2e36e83..3507506 100644
--- a/roles/burp-server/templates/burp-server.conf.j2
+++ b/roles/burp-server/templates/burp-server.conf.j2
@@ -1,4 +1,4 @@
-{% set is_burp2 = burp_version|version_compare('2.0', '>=') %}
+{% set is_burp2 = burp_version is version_compare('2.0', '>=') %}
 # This is an example config file for the burp server.
 
 mode = server