diff --git a/test/Pb208_nucleon_spectrum.jl b/test/Pb208_nucleon_spectrum.jl
index 0489162..18992eb 100644
--- a/test/Pb208_nucleon_spectrum.jl
+++ b/test/Pb208_nucleon_spectrum.jl
@@ -41,4 +41,4 @@ annotate!(bench_κs .+ 0.3, bench_Ebinds .- 1, [(o, 9, :red) for o in bench_occ]
 
 xlabel!("κ")
 ylabel!("Binding energy (MeV)")
-yaxis!(mirror=true)
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+yflip!()
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