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-rw-r--r--guix/build/vm.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/guix/build/vm.scm b/guix/build/vm.scm
index cf661a33f3..e3f6d27ee7 100644
--- a/guix/build/vm.scm
+++ b/guix/build/vm.scm
@@ -168,7 +168,7 @@ further populate the partition."
     (string-append target-directory (%store-directory)))
 
   (define partition
-    (string-append device 1))
+    (string-append device "1"))
 
   (unless (initialize-partition-table device
                                       #:partition-size