diff --git a/neuralnetworks/1.0/vts/functional/GeneratedTestHarness.cpp b/neuralnetworks/1.0/vts/functional/GeneratedTestHarness.cpp
index 464fc14abb..1f66c43bf9 100644
--- a/neuralnetworks/1.0/vts/functional/GeneratedTestHarness.cpp
+++ b/neuralnetworks/1.0/vts/functional/GeneratedTestHarness.cpp
@@ -62,7 +62,8 @@ void copy_back(MixedTyped* dst, const std::vector<RequestArgument>& ra, char* sr
     copy_back_<float>(dst, ra, src);
     copy_back_<int32_t>(dst, ra, src);
     copy_back_<uint8_t>(dst, ra, src);
-    static_assert(3 == std::tuple_size<MixedTyped>::value,
+    copy_back_<int16_t>(dst, ra, src);
+    static_assert(4 == std::tuple_size<MixedTyped>::value,
                   "Number of types in MixedTyped changed, but copy_back function wasn't updated");
 }