diff --git a/src/Unittests/unittests_common.hh b/src/Unittests/unittests_common.hh
index 0d095701..4142faac 100644
--- a/src/Unittests/unittests_common.hh
+++ b/src/Unittests/unittests_common.hh
@@ -9,6 +9,9 @@
 
 #ifdef TEST_CUSTOM_TRAITS
 #include <Unittests/unittests_common_customtraits.hh>
+#elif defined(TEST_DOUBLE_TRAITS)
+struct CustomTraits : public OpenMesh::DefaultTraitsDouble {
+};
 #else
 struct CustomTraits : public OpenMesh::DefaultTraits {
 };