diff --git a/agaric/templates/paragraph/paragraph--slide--columnar.html.twig b/agaric/templates/paragraph/paragraph--slide--columnar.html.twig
index 98ceedd..d459d6b 100644
--- a/agaric/templates/paragraph/paragraph--slide--columnar.html.twig
+++ b/agaric/templates/paragraph/paragraph--slide--columnar.html.twig
@@ -1,2 +1,2 @@
-{% extends paragraph--slide.html.twig %}
+{% extends "@agarica/paragraph--slide.html.twig" %}
 {# We do this to "un-override" the columnar paragraph in Octavia. #}