diff --git a/rust/agama-lib/share/examples/profile.jsonnet b/rust/agama-lib/share/examples/profile.jsonnet
index 176a5e006e..96095a0697 100644
--- a/rust/agama-lib/share/examples/profile.jsonnet
+++ b/rust/agama-lib/share/examples/profile.jsonnet
@@ -16,7 +16,7 @@ local agama = import 'hw.libsonnet';
 // Find the biggest disk which is suitable for installing the system.
 local findBiggestDisk(disks) =
   local sizedDisks = std.filter(function(d) std.objectHas(d, 'size'), disks);
-  local sorted = std.sort(sizedDisks, function(x) x.size);
+  local sorted = std.sort(sizedDisks, function(x) -x.size);
   sorted[0].logicalname;
 
 {