diff --git a/benchmarks/sizeof_gui/main.cpp b/benchmarks/sizeof_gui/main.cpp
index 333e341dc..3b9c2d98a 100644
--- a/benchmarks/sizeof_gui/main.cpp
+++ b/benchmarks/sizeof_gui/main.cpp
@@ -23,4 +23,5 @@ GUI_APP_MAIN
 	RDUMP(sizeof(RichTextView));
 	RDUMP(sizeof(ColumnList));
 	RDUMP(sizeof(RichEdit));
+	RDUMP(sizeof(Ctrl::LogPos));
 }