diff --git a/tests/validation/fixtures/DirectConvolutionLayerFixture.h b/tests/validation/fixtures/DirectConvolutionLayerFixture.h
index e37063e..7faea55 100644
--- a/tests/validation/fixtures/DirectConvolutionLayerFixture.h
+++ b/tests/validation/fixtures/DirectConvolutionLayerFixture.h
@@ -108,9 +108,14 @@
                 break;
             }
             case DataType::F16:
+            {
+                arm_compute::utils::uniform_real_distribution_fp16 distribution{ half(-1.0f), half(1.0f) };
+                library->fill(tensor, distribution, i);
+                break;
+            }
             case DataType::F32:
             {
-                std::uniform_real_distribution<> distribution(-1.f, 1.f);
+                std::uniform_real_distribution<float> distribution(-1.0f, 1.0f);
                 library->fill(tensor, distribution, i);
                 break;
             }