diff --git a/test/runtests.jl b/test/runtests.jl
index 6831c67..3eb1aea 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -44,10 +44,11 @@ g1 = fit(MixedModel,
 
 rng = MersenneTwister(0)
 x = rand(rng, 100)
-data = (x=x, x2=1.5 .* x, y=rand(rng, [0, 1], 100), z=repeat('A':'T', 5))
-mr = @suppress fit(MixedModel, @formula(y ~ x + x2 + (1 | z)), data; progress)
-br = parametricbootstrap(MersenneTwister(42), 500, mr; progress,
-                         optsum_overrides=(; ftol_rel=1e-6))
+a = rand(rng, 100)
+data = (; x, x2=1.5 .* x, a, y=rand(rng, [0, 1], 100), g=repeat('A':'T', 5))
+mr = @suppress fit(MixedModel, @formula(y ~ a + x + x2 + (1 | g)), data; progress)
+br = @suppress parametricbootstrap(MersenneTwister(42), 500, mr; progress,
+                                   optsum_overrides=(; ftol_rel=1e-6))
 
 @testset ExtendedTestSet "MixedModelsMakie.jl" begin
     @testset "Aqua" begin
diff --git a/test/utils_and_types.jl b/test/utils_and_types.jl
index cccbd83..61c39fa 100644
--- a/test/utils_and_types.jl
+++ b/test/utils_and_types.jl
@@ -33,6 +33,12 @@ m1 = fit(MixedModel,
     @test wald.estimate ≈ boot.estimate rtol = 0.05
     @test wald.lower ≈ boot.lower rtol = 0.05
     @test wald.upper ≈ boot.upper rtol = 0.05
+
+    @test all(splat(isapprox),
+                zip(MixedModelsMakie.confint_table(mr).estimate, fixef(mr)))
+
+    @test fixefnames(mr) == MixedModelsMakie.confint_table(mr).coefname
+    @test fixefnames(mr) == MixedModelsMakie.confint_table(br).coefname
 end
 
 @testset "ranefinfo" begin