diff --git a/tests/sdf/test_sdf_to_mesh.cpp b/tests/sdf/test_sdf_to_mesh.cpp
index bad54a5..ae0d305 100644
--- a/tests/sdf/test_sdf_to_mesh.cpp
+++ b/tests/sdf/test_sdf_to_mesh.cpp
@@ -2,7 +2,7 @@
 #include <gtest/gtest.h>
 
 using namespace vde::sdf;
-using core::Point3D;
+using vde::core::Point3D;
 
 TEST(SdfToMesh, SphereProducesValidMesh) {
     auto sphere = SdfNode::sphere(2.0);
diff --git a/tests/sdf/test_sdf_tree.cpp b/tests/sdf/test_sdf_tree.cpp
index 06ae50c..c16a9ff 100644
--- a/tests/sdf/test_sdf_tree.cpp
+++ b/tests/sdf/test_sdf_tree.cpp
@@ -3,8 +3,8 @@
 #include <cmath>
 
 using namespace vde::sdf;
-using core::Point3D;
-using core::Vector3D;
+using vde::core::Point3D;
+using vde::core::Vector3D;
 
 // ── Null/empty tree ──────────────────────────────────────────────