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-rw-r--r--src/launch.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/launch.c b/src/launch.c
index 7ca6fe11..a0d6c121 100644
--- a/src/launch.c
+++ b/src/launch.c
@@ -320,7 +320,7 @@ guestfs__config (guestfs_h *g,
qp = safe_malloc (g, sizeof *qp);
qp->qemu_param = safe_strdup (g, qemu_param);
- qp->qemu_value = safe_strdup (g, qemu_value);
+ qp->qemu_value = qemu_value ? safe_strdup (g, qemu_value) : NULL;
qp->next = g->qemu_params;
g->qemu_params = qp;