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-rw-r--r--gnu/build/image.scm10
1 files changed, 5 insertions, 5 deletions
diff --git a/gnu/build/image.scm b/gnu/build/image.scm
index 8a2d0eb5fd..640a784204 100644
--- a/gnu/build/image.scm
+++ b/gnu/build/image.scm
@@ -118,16 +118,16 @@ ROOT directory to populate the image."
      ((string=? type "vfat")
       (make-vfat-image partition target root))
      (else
-      (format (current-error-port)
-              "Unsupported partition type~%.")))))
+      (raise (condition
+              (&message
+               (message "unsupported partition type"))))))))
 
 (define (convert-disk-image image format output)
   "Convert IMAGE to OUTPUT according to the given FORMAT."
   (case format
     ((compressed-qcow2)
-     (begin
-       (invoke "qemu-img" "convert" "-c" "-f" "raw"
-               "-O" "qcow2" image output)))
+     (invoke "qemu-img" "convert" "-c" "-f" "raw"
+             "-O" "qcow2" image output))
     (else
      (copy-file image output))))