diff --git a/reactos/dll/win32/user32/include/window.h b/reactos/dll/win32/user32/include/window.h
index cc069c4a305..0ac6e2a1e57 100644
--- a/reactos/dll/win32/user32/include/window.h
+++ b/reactos/dll/win32/user32/include/window.h
@@ -63,3 +63,5 @@ User32CreateWindowEx(DWORD dwExStyle,
 		HINSTANCE hInstance,
 		LPVOID lpParam,
 		BOOL Unicode);
+
+HWND* WIN_ListChildren (HWND hWndparent);
diff --git a/reactos/dll/win32/user32/windows/defwnd.c b/reactos/dll/win32/user32/windows/defwnd.c
index 6621a487e8a..1ba74626e70 100644
--- a/reactos/dll/win32/user32/windows/defwnd.c
+++ b/reactos/dll/win32/user32/windows/defwnd.c
@@ -1574,8 +1574,15 @@ User32DefWindowProc(HWND hWnd,
 
         case WM_INPUTLANGCHANGE:
         {
-            //FIXME: What to do?
-            return TRUE;
+            int count = 0;
+            HWND *win_array = WIN_ListChildren( hWnd );
+
+            if (!win_array)
+                break;
+            while (win_array[count])
+                SendMessageW( win_array[count++], WM_INPUTLANGCHANGE, wParam, lParam);
+            HeapFree(GetProcessHeap(),0,win_array);
+            break;
         }
 
         case WM_ENDSESSION:
diff --git a/reactos/dll/win32/user32/windows/mdi.c b/reactos/dll/win32/user32/windows/mdi.c
index 9c8deb53477..41f6ae9fc19 100644
--- a/reactos/dll/win32/user32/windows/mdi.c
+++ b/reactos/dll/win32/user32/windows/mdi.c
@@ -126,7 +126,6 @@ static HWND MDI_MoreWindowsDialog(HWND);
 static LRESULT WINAPI MDIClientWndProcA( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam );
 static LRESULT WINAPI MDIClientWndProcW( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam );
 
-static
 HWND* WIN_ListChildren (HWND hWndparent)
 {