diff --git a/dlls/explorerframe/explorerframe_main.h b/dlls/explorerframe/explorerframe_main.h
index 44e72531d8c..e6cea6375a6 100644
--- a/dlls/explorerframe/explorerframe_main.h
+++ b/dlls/explorerframe/explorerframe_main.h
@@ -25,9 +25,6 @@
 
 #include "shlobj.h"
 
-/* Not declared in commctrl.h ("for internal use (msdn)") */
-#define TVS_EX_NOSINGLECOLLAPSE 0x0001
-
 extern HINSTANCE explorerframe_hinstance DECLSPEC_HIDDEN;
 
 extern LONG EFRAME_refCount DECLSPEC_HIDDEN;
diff --git a/dlls/explorerframe/tests/nstc.c b/dlls/explorerframe/tests/nstc.c
index 54365b0d4f8..1d1673c8abb 100644
--- a/dlls/explorerframe/tests/nstc.c
+++ b/dlls/explorerframe/tests/nstc.c
@@ -30,9 +30,6 @@
 
 static HWND hwnd;
 
-/* "Intended for internal use" */
-#define TVS_EX_NOSINGLECOLLAPSE 0x1
-
 static HRESULT (WINAPI *pSHCreateShellItem)(LPCITEMIDLIST,IShellFolder*,LPCITEMIDLIST,IShellItem**);
 static HRESULT (WINAPI *pSHGetIDListFromObject)(IUnknown*, PIDLIST_ABSOLUTE*);
 static HRESULT (WINAPI *pSHCreateItemFromParsingName)(PCWSTR,IBindCtx*,REFIID,void**);
diff --git a/include/commctrl.h b/include/commctrl.h
index aa33cabdab2..7d6f5c5b968 100644
--- a/include/commctrl.h
+++ b/include/commctrl.h
@@ -2409,6 +2409,7 @@ static const WCHAR WC_TREEVIEWW[] = { 'S','y','s',
 #define TVS_SHAREDIMAGELISTS  0x0000
 #define TVS_PRIVATEIMAGELISTS 0x0400
 
+#define TVS_EX_NOSINGLECOLLAPSE    0x0001
 #define TVS_EX_MULTISELECT         0x0002
 #define TVS_EX_DOUBLEBUFFER        0x0004
 #define TVS_EX_NOINDENTSTATE       0x0008