diff --git a/src/core/gpu/cl/kernels/ClGemmMatrixMultiplyReshapedOnlyRhsKernel.h b/src/core/gpu/cl/kernels/ClGemmMatrixMultiplyReshapedOnlyRhsKernel.h
index ff6c391..3d6164e 100644
--- a/src/core/gpu/cl/kernels/ClGemmMatrixMultiplyReshapedOnlyRhsKernel.h
+++ b/src/core/gpu/cl/kernels/ClGemmMatrixMultiplyReshapedOnlyRhsKernel.h
@@ -43,7 +43,7 @@
 class ClGemmMatrixMultiplyReshapedOnlyRhsKernel : public ICLKernel
 {
 public:
-    ClGemmMatrixMultiplyReshapedOnlyRhsKernel() = default;
+    ClGemmMatrixMultiplyReshapedOnlyRhsKernel();
     ARM_COMPUTE_DISALLOW_COPY_ALLOW_MOVE(ClGemmMatrixMultiplyReshapedOnlyRhsKernel);
     /** Initialise the kernel's input and output.
      *