diff --git a/test/test_visualization.jl b/test/test_visualization.jl
index 56d6ff27..8db08b90 100644
--- a/test/test_visualization.jl
+++ b/test/test_visualization.jl
@@ -5,7 +5,9 @@ using DispersiveShallowWater
 using Plots
 
 @testset "Visualization" begin
-    trixi_include(@__MODULE__, default_example(), tspan = (0.0, 1.0))
+    custom_integral(q, equations) = q[1]^2
+    DispersiveShallowWater.pretty_form_utf(::typeof(custom_integral)) = "∫η²"
+    trixi_include(@__MODULE__, default_example(), tspan = (0.0, 1.0), extra_analysis_integrals = (waterheight_total, custom_integral))
     @test_nowarn plot(semi => sol)
     @test_nowarn plot!(semi => sol, plot_initial = true)
     @test_nowarn plot(semi, sol, conversion = prim2cons, plot_bathymetry = false)