diff --git a/src/core/gpu/cl/kernels/ClConvertFullyConnectedWeightsKernel.h b/src/core/gpu/cl/kernels/ClConvertFullyConnectedWeightsKernel.h
index 11ab4d2..6f4f09d 100644
--- a/src/core/gpu/cl/kernels/ClConvertFullyConnectedWeightsKernel.h
+++ b/src/core/gpu/cl/kernels/ClConvertFullyConnectedWeightsKernel.h
@@ -47,7 +47,7 @@
 class ClConvertFullyConnectedWeightsKernel : public IClKernel
 {
 public:
-    ClConvertFullyConnectedWeightsKernel() = default;
+    ClConvertFullyConnectedWeightsKernel();
     ARM_COMPUTE_DISALLOW_COPY_ALLOW_MOVE(ClConvertFullyConnectedWeightsKernel);
     /** Set the src and dst tensor.
      *