diff --git a/Containerfile b/Containerfile
index 6a20b3a..0797d15 100644
--- a/Containerfile
+++ b/Containerfile
@@ -2,7 +2,7 @@ ARG FEDORA_MAJOR_VERSION=40
 
 FROM quay.io/fedora-ostree-desktops/kinoite:${FEDORA_MAJOR_VERSION}
 
-ARG FEDORA_MAJOR_VERSION
+ARG FEDORA_MAJOR_VERSION=${FEDORA_MAJOR_VERSION}
 
 COPY scripts /tmp/scripts