diff --git a/tests/validation/reference/NonMaximaSuppression.cpp b/tests/validation/reference/NonMaximaSuppression.cpp
index eab5cec..34c6c07 100644
--- a/tests/validation/reference/NonMaximaSuppression.cpp
+++ b/tests/validation/reference/NonMaximaSuppression.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 ARM Limited.
+ * Copyright (c) 2017-2018 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -69,6 +69,7 @@
 }
 
 template SimpleTensor<float> non_maxima_suppression(const SimpleTensor<float> &src, BorderMode border_mode, float constant_border_value);
+template SimpleTensor<uint8_t> non_maxima_suppression(const SimpleTensor<uint8_t> &src, BorderMode border_mode, uint8_t constant_border_value);
 } // namespace reference
 } // namespace validation
 } // namespace test