diff --git a/src/graph/backends/CL/CLFunctionsFactory.cpp b/src/graph/backends/CL/CLFunctionsFactory.cpp
index d41da4b..c9d1f6a 100644
--- a/src/graph/backends/CL/CLFunctionsFactory.cpp
+++ b/src/graph/backends/CL/CLFunctionsFactory.cpp
@@ -64,6 +64,7 @@
     using Addition       = CLArithmeticAddition;
     using Subtraction    = CLArithmeticSubtraction;
     using Multiplication = CLPixelWiseMultiplication;
+    using Maximum        = CLElementwiseMax;
 };
 
 /** Collection of CL unary element-wise functions */
diff --git a/src/graph/backends/CL/CLNodeValidator.cpp b/src/graph/backends/CL/CLNodeValidator.cpp
index cc618db..7646ac3 100644
--- a/src/graph/backends/CL/CLNodeValidator.cpp
+++ b/src/graph/backends/CL/CLNodeValidator.cpp
@@ -44,6 +44,7 @@
     using ArithmeticAddition      = CLArithmeticAddition;
     using ArithmeticSubtraction   = CLArithmeticSubtraction;
     using PixelWiseMultiplication = CLPixelWiseMultiplication;
+    using ElementwiseMax          = CLElementwiseMax;
 };
 
 /** Collection of CL unary element-wise functions */