diff --git a/src/core/CL/kernels/CLWidthConcatenate4TensorsKernel.cpp b/src/core/CL/kernels/CLWidthConcatenate4TensorsKernel.cpp
index 4e673a9..fb025e6 100644
--- a/src/core/CL/kernels/CLWidthConcatenate4TensorsKernel.cpp
+++ b/src/core/CL/kernels/CLWidthConcatenate4TensorsKernel.cpp
@@ -165,6 +165,9 @@
 
     ICLKernel::configure_internal(std::get<1>(win_config));
 
+    // Set output valid region
+    output->info()->set_valid_region(ValidRegion(Coordinates(), output->info()->tensor_shape()));
+
     // Pass paddings as arguments to the kernel
     const unsigned int input1_width = input1->info()->dimension(0);
     const unsigned int input2_width = input2->info()->dimension(0);