arm_compute v19.11
diff --git a/examples/graph_yolov3.cpp b/examples/graph_yolov3.cpp
index c0a97da..bbc6b72 100644
--- a/examples/graph_yolov3.cpp
+++ b/examples/graph_yolov3.cpp
@@ -44,6 +44,7 @@
     {
         // Parse arguments
         cmd_parser.parse(argc, argv);
+        cmd_parser.validate();
 
         // Consume common parameters
         common_params = consume_common_graph_parameters(common_opts);