diff --git a/scripts/image-build/build-vyos-image b/scripts/image-build/build-vyos-image
index 75c9d0c6bd..721e743ca7 100755
--- a/scripts/image-build/build-vyos-image
+++ b/scripts/image-build/build-vyos-image
@@ -639,6 +639,8 @@ if __name__ == "__main__":
             # Most other formats, thankfully, can be produced with just `qemu-img convert`
             other_formats = filter(lambda x: x not in ["iso", "raw"], build_config["image_format"])
             for f in other_formats:
-                target = f"{os.path.splitext(raw_image)[0]}.{f}"
+                image_ext = build_config.get("image_ext", f)
+                image_opts = build_config.get("image_opts", "")
+                target = f"{os.path.splitext(raw_image)[0]}.{image_ext}"
                 print(f"I: Building {f} file {target}")
-                cmd(f"qemu-img convert -f raw -O {f} {raw_image} {target}")
+                cmd(f"qemu-img convert -f raw -O {f} {image_opts} {raw_image} {target}")