diff --git a/conanfile.py b/conanfile.py
index 01e2ffb579c..659915b0baf 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -412,7 +412,7 @@ def generate(self):
 
         # Copy materials (flat)
         rmdir(self, str(Path(self.source_folder, "resources", "materials")))
-        fdm_materials = self.dependencies["fdm_materials"].cpp_info
+        fdm_materials = self.dependencies["fdm_materials_private" if self.options.internal else "fdm_materials"].cpp_info
         copy(self, "*", fdm_materials.resdirs[0], self.source_folder)
 
         # Copy internal resources