diff --git a/imgui.h b/imgui.h
index f786f5d6..deb53293 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1154,6 +1154,7 @@ struct ImDrawVert
 // You can override the vertex format layout by defining IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT in imconfig.h
 // The code expect ImVec2 pos (8 bytes), ImVec2 uv (8 bytes), ImU32 col (4 bytes), but you can re-order them or add other fields as needed to simplify integration in your engine.
 // The type has to be described within the macro (you can either declare the struct or use a typedef)
+// NOTE: IMGUI DOESN'T CLEAR THE STRUCTURE AND DOESN'T CALL A CONSTRUCTOR. IF YOU ADD EXTRA FIELDS (SUCH AS A 'Z' COORDINATES) YOU WILL NEED TO CLEAR THE FIELD DURING RENDER OR TO IGNORE IT. 
 IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT;
 #endif
 
diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index b198cd17..0dbed614 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -15,7 +15,7 @@
 #include <ctype.h>          // toupper, isprint
 #include <math.h>           // sqrtf, powf, cosf, sinf, floorf, ceilf
 #include <stdio.h>          // vsnprintf, sscanf, printf
-#include <stdlib.h>         // NULL, malloc, free, qsort, atoi
+#include <stdlib.h>         // NULL, malloc, free, atoi
 #if defined(_MSC_VER) && _MSC_VER <= 1500 // MSVC 2008 or earlier
 #include <stddef.h>         // intptr_t
 #else