diff --git a/test/unit_test_materials.jl b/test/unit_test_materials.jl
index b82c582e..0972275b 100644
--- a/test/unit_test_materials.jl
+++ b/test/unit_test_materials.jl
@@ -1,5 +1,5 @@
 @testset "Materials" verbose=true begin
-    database = TASOPT.MaterialProperties
+    database = TASOPT.materials.MaterialProperties
     @testset "Structural Alloys" begin
         Al7075 = StructuralAlloy("Al-7075")
         @test Al7075.ρ == database["Al-7075"]["density"]
@@ -17,9 +17,9 @@
     @testset "Conductors" begin
         Cu = Conductor("Cu")
         @test Cu.ρ == database["Cu"]["density"] 
-        @test TASOPT.resxden(Cu) == 0.000150528
-        @test TASOPT.resistivity(Cu) == database["Cu"]["resistivity"]
-        @test TASOPT.resistivity(Cu, 300.0) ≈ 1.7264923200000005e-8
+        @test TASOPT.materials.resxden(Cu) == 0.000150528
+        @test TASOPT.materials.resistivity(Cu) == database["Cu"]["resistivity"]
+        @test TASOPT.materials.resistivity(Cu, 300.0) ≈ 1.7264923200000005e-8
     end
 
     @testset "Insulators" begin