diff --git a/test/test_projects/Diffusion/test/localtest_diffusion_Threads.jl b/test/test_projects/Diffusion/test/localtest_diffusion_Threads.jl
index 4f68459b..d5e5c198 100644
--- a/test/test_projects/Diffusion/test/localtest_diffusion_Threads.jl
+++ b/test/test_projects/Diffusion/test/localtest_diffusion_Threads.jl
@@ -10,4 +10,8 @@ using Diffusion
 B = zeros(4, 4)
 A = ones(4, 4)
 memcopy!(B, A)
-@test all(B .== A)
\ No newline at end of file
+@test all(B .== A)
+D = zeros(4, 4, 4)
+C = ones(4, 4, 4)
+memcopy!(D, C)
+@test all(D .== C)