diff --git a/pungi-build.conf.j2 b/pungi-build.conf.j2
index ab5fd3d..42a2ce5 100644
--- a/pungi-build.conf.j2
+++ b/pungi-build.conf.j2
@@ -123,7 +123,7 @@ lorax_options = [
 
 buildinstall_skip = [
     {% for variant, options in variants.items() %}
-        {% if options['buildinstall_skip'] is string %}
+        {% if options['buildinstall_skip'] is not bool %}
     ("^{{ variant }}$", {{ options['buildinstall_skip'] }}),
         {% elif options['buildinstall_skip'] | default(false) %}
     ("^{{ variant }}$", {