diff --git a/src/core/gpu/cl/kernels/ClGemmMatrixMultiplyReshapedKernel.h b/src/core/gpu/cl/kernels/ClGemmMatrixMultiplyReshapedKernel.h
index ab648f1..b8ae4b9 100644
--- a/src/core/gpu/cl/kernels/ClGemmMatrixMultiplyReshapedKernel.h
+++ b/src/core/gpu/cl/kernels/ClGemmMatrixMultiplyReshapedKernel.h
@@ -45,7 +45,7 @@
 class ClGemmMatrixMultiplyReshapedKernel : public IClKernel
 {
 public:
-    ClGemmMatrixMultiplyReshapedKernel() = default;
+    ClGemmMatrixMultiplyReshapedKernel();
     ARM_COMPUTE_DISALLOW_COPY_ALLOW_MOVE(ClGemmMatrixMultiplyReshapedKernel);
     /** Initialise the kernel's input and output.
      *