diff --git a/test/test_unit.jl b/test/test_unit.jl
index d61a3345..b3550a67 100644
--- a/test/test_unit.jl
+++ b/test/test_unit.jl
@@ -434,7 +434,8 @@ end
         @test isapprox(wave_speed(disp_rel, equations, k), wave_speeds[i])
         # Add test for correct broadcasting
         @test isapprox(disp_rel.(equations, [k, k]), [frequencies[i], frequencies[i]])
-        @test isapprox(wave_speed.(disp_rel, equations, [k, k]), [wave_speeds[i], wave_speeds[i]])
+        @test isapprox(wave_speed.(disp_rel, equations, [k, k]),
+                       [wave_speeds[i], wave_speeds[i]])
         # For the normalized wave speed we expect c(0) = 1. Use eps() to avoid division by zero in c = omega / k
         @test isapprox(wave_speed(disp_rel, equations, eps(), normalize = true), 1.0)
     end