arm_compute v17.12
diff --git a/src/runtime/CL/functions/CLArithmeticSubtraction.cpp b/src/runtime/CL/functions/CLArithmeticSubtraction.cpp
index 651f51a..5fca30c 100644
--- a/src/runtime/CL/functions/CLArithmeticSubtraction.cpp
+++ b/src/runtime/CL/functions/CLArithmeticSubtraction.cpp
@@ -36,3 +36,8 @@
     k->configure(input1, input2, output, policy);
     _kernel = std::move(k);
 }
+
+Status CLArithmeticSubtraction::validate(const ITensorInfo *input1, const ITensorInfo *input2, const ITensorInfo *output, ConvertPolicy policy)
+{
+    return CLArithmeticSubtractionKernel::validate(input1, input2, output, policy);
+}