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-rw-r--r--gnu/installer/kernel.scm3
1 files changed, 2 insertions, 1 deletions
diff --git a/gnu/installer/kernel.scm b/gnu/installer/kernel.scm
index a07d24d09a6..2700931d402 100644
--- a/gnu/installer/kernel.scm
+++ b/gnu/installer/kernel.scm
@@ -27,7 +27,8 @@
str)
(define (kernel->configuration kernel dry-run?)
- (if (string-prefix? "Hurd" kernel)
+ (if (and (string? kernel)
+ (string-prefix? "Hurd" kernel))
`((kernel %hurd-default-operating-system-kernel)
,(comment (G_ ";; \"noide\" disables the gnumach IDE driver, enabling rumpdisk.\n"))
(kernel-arguments '("noide"))