diff --git a/arm_compute/runtime/CL/functions/CLBitwiseNot.h b/arm_compute/runtime/CL/functions/CLBitwiseNot.h
index 4c21d56..1d8531a 100644
--- a/arm_compute/runtime/CL/functions/CLBitwiseNot.h
+++ b/arm_compute/runtime/CL/functions/CLBitwiseNot.h
@@ -28,6 +28,7 @@
 
 namespace arm_compute
 {
+class CLCompileContext;
 class ICLTensor;
 
 /** Basic function to run @ref CLBitwiseNotKernel.