diff --git a/test/runtests.jl b/test/runtests.jl
index 11b4a6e..65a5b24 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -193,6 +193,7 @@ end
 
 @testset "type information" begin
     @test Adapt.ndims(LinearAlgebra.Transpose{Float64,Array{Float64,1}}) == 2
+    @test Adapt.ndims(LinearAlgebra.Symmetric{Float64,Matrix{Float64}}) == 2
     @test Adapt.ndims(Adapt.WrappedSubArray{Float64,3,Array{Float64,3}}) == 3
 
     @test Adapt.parent(LinearAlgebra.Transpose{Float64,Array{Float64,1}}) == Array