diff --git a/pungi-build.conf.j2 b/pungi-build.conf.j2
index b3837b5..305a269 100644
--- a/pungi-build.conf.j2
+++ b/pungi-build.conf.j2
@@ -57,7 +57,9 @@ pkgset_allow_reuse = False
 
 sigkeys = [
     {% for sigkey in sigkeys_fingerprints %}
+    {% if sigkey %}
     "{{ sigkey }}",
+    {% endif %}
     {% endfor %}
 ]