diff --git a/cimgui.cpp b/cimgui.cpp
index 7fa2954..abaca4c 100644
--- a/cimgui.cpp
+++ b/cimgui.cpp
@@ -1,5 +1,6 @@
 //This file is automatically generated by generator.lua from https://github.com/cimgui/cimgui
 //based on imgui.h file version "1.76" from Dear ImGui https://github.com/ocornut/imgui
+//with imgui_internal.h api
 
 #include "./imgui/imgui.h"
 #include "./imgui/imgui_internal.h"
diff --git a/cimgui.h b/cimgui.h
index dd1057f..42c3771 100644
--- a/cimgui.h
+++ b/cimgui.h
@@ -1,5 +1,6 @@
 //This file is automatically generated by generator.lua from https://github.com/cimgui/cimgui
 //based on imgui.h file version "1.76" from Dear ImGui https://github.com/ocornut/imgui
+//with imgui_internal.h api
 #ifndef CIMGUI_INCLUDED
 #define CIMGUI_INCLUDED
 #include <stdio.h>
diff --git a/generator/generator.lua b/generator/generator.lua
index 767a6cd..5786355 100644
--- a/generator/generator.lua
+++ b/generator/generator.lua
@@ -415,6 +415,10 @@ while true do
 end
 pipe:close()
 cimgui_header = cimgui_header:gsub("XXX",imgui_version)
+if INTERNAL_GENERATION then
+	cimgui_header = cimgui_header..[[//with imgui_internal.h api
+]]
+end
 print("IMGUI_VERSION",imgui_version)
 --get some defines----------------------------
 gdefines = get_defines{"IMGUI_VERSION","FLT_MAX"}
diff --git a/generator/output/cimgui.cpp b/generator/output/cimgui.cpp
index 7fa2954..abaca4c 100644
--- a/generator/output/cimgui.cpp
+++ b/generator/output/cimgui.cpp
@@ -1,5 +1,6 @@
 //This file is automatically generated by generator.lua from https://github.com/cimgui/cimgui
 //based on imgui.h file version "1.76" from Dear ImGui https://github.com/ocornut/imgui
+//with imgui_internal.h api
 
 #include "./imgui/imgui.h"
 #include "./imgui/imgui_internal.h"
diff --git a/generator/output/cimgui.h b/generator/output/cimgui.h
index dd1057f..42c3771 100644
--- a/generator/output/cimgui.h
+++ b/generator/output/cimgui.h
@@ -1,5 +1,6 @@
 //This file is automatically generated by generator.lua from https://github.com/cimgui/cimgui
 //based on imgui.h file version "1.76" from Dear ImGui https://github.com/ocornut/imgui
+//with imgui_internal.h api
 #ifndef CIMGUI_INCLUDED
 #define CIMGUI_INCLUDED
 #include <stdio.h>