--- a/C/7zVersion.rc
+++ b/C/7zVersion.rc
@@ -5,7 +5,7 @@
 #define MY_VFT_APP  0x00000001L
 #define MY_VFT_DLL  0x00000002L
 
-// #include <WinVer.h>
+// #include <winver.h>
 
 #ifndef MY_VERSION
 #include "7zVersion.h"
--- a/C/7zip_gcc_c.mak
+++ b/C/7zip_gcc_c.mak
@@ -106,7 +106,7 @@
 endif
 
 
-LIB2 = -lOle32 -loleaut32 -luuid -ladvapi32 -lUser32 -lShell32
+LIB2 = -lole32 -loleaut32 -luuid -ladvapi32 -luser32 -lshell32
 
 CFLAGS_EXTRA = -DUNICODE -D_UNICODE
 # -Wno-delete-non-virtual-dtor
--- a/CPP/7zip/7zip_gcc.mak
+++ b/CPP/7zip/7zip_gcc.mak
@@ -124,8 +124,8 @@
 DEL_OBJ_EXE = -$(RM) $(O)\*.o $(O)\$(PROG).exe $(O)\$(PROG).dll
 endif
 
-LIB2_GUI = -lOle32 -lGdi32 -lComctl32 -lComdlg32 -lShell32 $(LIB_HTMLHELP)
-LIB2 = -loleaut32 -luuid -ladvapi32 -lUser32 $(LIB2_GUI)
+LIB2_GUI = -lole32 -lgdi32 -lcomctl32 -lcomdlg32 -lshell32 $(LIB_HTMLHELP)
+LIB2 = -loleaut32 -luuid -ladvapi32 -luser32 $(LIB2_GUI)
 
 CXXFLAGS_EXTRA = -DUNICODE -D_UNICODE
 # -Wno-delete-non-virtual-dtor
--- a/C/Util/7zipInstall/resource.rc
+++ b/C/Util/7zipInstall/resource.rc
@@ -1,6 +1,6 @@
 #include <winnt.h>
 #include <WinUser.h>
-#include <CommCtrl.h>
+#include <commctrl.h>
 
 #define USE_COPYRIGHT_CR
 #include "../../7zVersion.rc"
--- a/C/Util/7zipUninstall/resource.rc
+++ b/C/Util/7zipUninstall/resource.rc
@@ -1,6 +1,6 @@
 #include <winnt.h>
 #include <WinUser.h>
-#include <CommCtrl.h>
+#include <commctrl.h>
 
 #define USE_COPYRIGHT_CR
 #include "../../7zVersion.rc"
--- a/CPP/7zip/Crypto/RandGen.cpp
+++ b/CPP/7zip/Crypto/RandGen.cpp
@@ -19,7 +19,7 @@
 
 #ifdef USE_STATIC_RtlGenRandom
 
-// #include <NTSecAPI.h>
+// #include <ntsecapi.h>
 
 EXTERN_C_BEGIN
 #ifndef RtlGenRandom
--- a/CPP/7zip/GuiCommon.rc
+++ b/CPP/7zip/GuiCommon.rc
@@ -4,7 +4,7 @@
 // #include <WinUser.h>
 
 // for Windows CE:
-#include <CommCtrl.h>
+#include <commctrl.h>
 
 
 LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
--- a/CPP/7zip/UI/FileManager/PanelItemOpen.cpp
+++ b/CPP/7zip/UI/FileManager/PanelItemOpen.cpp
@@ -4,7 +4,7 @@
 
 #include "../../../Common/MyWindows.h"
 
-#include <TlHelp32.h>
+#include <tlhelp32.h>
 
 #include "../../../Common/IntToString.h"
 
--- a/CPP/7zip/UI/FileManager/SysIconUtils.h
+++ b/CPP/7zip/UI/FileManager/SysIconUtils.h
@@ -5,7 +5,7 @@
 
 #include "../../../Common/MyWindows.h"
 
-#include <CommCtrl.h>
+#include <commctrl.h>
 
 #include "../../../Common/MyString.h"
 
--- a/CPP/Windows/Control/ComboBox.h
+++ b/CPP/Windows/Control/ComboBox.h
@@ -5,7 +5,7 @@
 
 #include "../../Common/MyWindows.h"
 
-#include <CommCtrl.h>
+#include <commctrl.h>
 
 #include "../Window.h"
 
--- a/CPP/Windows/Control/ImageList.h
+++ b/CPP/Windows/Control/ImageList.h
@@ -3,7 +3,7 @@
 #ifndef __WINDOWS_CONTROL_IMAGE_LIST_H
 #define __WINDOWS_CONTROL_IMAGE_LIST_H
 
-#include <CommCtrl.h>
+#include <commctrl.h>
 
 #include "../Defs.h"
 
--- a/CPP/Windows/Control/ListView.h
+++ b/CPP/Windows/Control/ListView.h
@@ -5,7 +5,7 @@
 
 #include "../../Common/MyWindows.h"
 
-#include <CommCtrl.h>
+#include <commctrl.h>
 
 #include "../Window.h"
 
--- a/CPP/Windows/Control/ProgressBar.h
+++ b/CPP/Windows/Control/ProgressBar.h
@@ -5,7 +5,7 @@
 
 #include "../../Common/MyWindows.h"
 
-#include <CommCtrl.h>
+#include <commctrl.h>
 
 #include "../Window.h"
 
--- a/CPP/Windows/SecurityUtils.h
+++ b/CPP/Windows/SecurityUtils.h
@@ -3,7 +3,7 @@
 #ifndef __WINDOWS_SECURITY_UTILS_H
 #define __WINDOWS_SECURITY_UTILS_H
 
-#include <NTSecAPI.h>
+#include <ntsecapi.h>
 
 #include "Defs.h"