diff --git a/tests/validation/fixtures/WinogradConvolutionLayerFixture.h b/tests/validation/fixtures/WinogradConvolutionLayerFixture.h
index 410c2a5..4e26a5e 100644
--- a/tests/validation/fixtures/WinogradConvolutionLayerFixture.h
+++ b/tests/validation/fixtures/WinogradConvolutionLayerFixture.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2019 Arm Limited.
+ * Copyright (c) 2018-2020 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -177,7 +177,7 @@
         {
             case DataType::F16:
             {
-                arm_compute::utils::uniform_real_distribution_fp16 distribution((half)min, (half)max);
+                arm_compute::utils::uniform_real_distribution_fp16 distribution{ half(min), half(max) };
                 library->fill(tensor, distribution, i);
                 break;
             }
@@ -499,9 +499,14 @@
         switch(tensor.data_type())
         {
             case DataType::F16:
+            {
+                arm_compute::utils::uniform_real_distribution_fp16 distribution{ half(min), half(max) };
+                library->fill(tensor, distribution, i);
+                break;
+            }
             case DataType::F32:
             {
-                std::uniform_real_distribution<> distribution(min, max);
+                std::uniform_real_distribution<float> distribution(min, max);
                 library->fill(tensor, distribution, i);
                 break;
             }