arm_compute v19.11
diff --git a/examples/graph_resnet50.cpp b/examples/graph_resnet50.cpp
index 7c9b95e..17506dc 100644
--- a/examples/graph_resnet50.cpp
+++ b/examples/graph_resnet50.cpp
@@ -43,6 +43,7 @@
     {
         // Parse arguments
         cmd_parser.parse(argc, argv);
+        cmd_parser.validate();
 
         // Consume common parameters
         common_params = consume_common_graph_parameters(common_opts);