diff --git a/modules/gltf/gltf_document.cpp b/modules/gltf/gltf_document.cpp
index 09bae884b9a..30d023606f2 100644
--- a/modules/gltf/gltf_document.cpp
+++ b/modules/gltf/gltf_document.cpp
@@ -2796,7 +2796,7 @@ Error GLTFDocument::_parse_meshes(Ref<GLTFState> state) {
 				mat = mat3d;
 			}
 
-			import_mesh->add_surface(primitive, array, morphs, Dictionary(), mat, mat->get_name());
+			import_mesh->add_surface(primitive, array, morphs, Dictionary(), mat, mat.is_valid() ? mat->get_name() : String());
 		}
 
 		Vector<float> blend_weights;