diff --git a/rocky/images.conf b/rocky/images.conf
index 268a934..04e531e 100644
--- a/rocky/images.conf
+++ b/rocky/images.conf
@@ -37,7 +37,7 @@ image_build = {
         },
         {
             "image-build": {
-                "format": [("raw.xz", "raw.xz")],
+                "format": [("raw-xz", "raw.xz")],
                 "name": "Rocky-8-EC2",
                 "subvariant": "ec2",
                 "version": "8.8",