diff --git a/reactos/subsys/system/explorer/desktop/desktop.cpp b/reactos/subsys/system/explorer/desktop/desktop.cpp
index 5c076101b85..e836331a63d 100644
--- a/reactos/subsys/system/explorer/desktop/desktop.cpp
+++ b/reactos/subsys/system/explorer/desktop/desktop.cpp
@@ -38,6 +38,7 @@
 
 #include "desktop.h"
 #include "../taskbar/desktopbar.h"
+#include "../taskbar/taskbar.h"	// for PM_GET_LAST_ACTIVE
 #include "../shell/mainframe.h"	// for MainFrame::OpenShellFolders()
 
 
diff --git a/reactos/subsys/system/explorer/taskbar/desktopbar.cpp b/reactos/subsys/system/explorer/taskbar/desktopbar.cpp
index 0b041e30834..7eb1c1792d5 100644
--- a/reactos/subsys/system/explorer/taskbar/desktopbar.cpp
+++ b/reactos/subsys/system/explorer/taskbar/desktopbar.cpp
@@ -228,6 +228,11 @@ LRESULT DesktopBar::WndProc(UINT nmsg, WPARAM wparam, LPARAM lparam)
 		PopupMenu(IDM_DESKTOPBAR).TrackPopupMenu(_hwnd, MAKEPOINTS(lparam));
 		break;
 
+	  case PM_GET_LAST_ACTIVE:
+		if (_hwndTaskBar)
+			return SendMessage(_hwndTaskBar, nmsg, wparam, lparam);
+		break;
+
 	  default: def:
 		return super::WndProc(nmsg, wparam, lparam);
 	}
diff --git a/reactos/subsys/system/explorer/taskbar/taskbar.cpp b/reactos/subsys/system/explorer/taskbar/taskbar.cpp
index fedca72d766..7bdbacd741e 100644
--- a/reactos/subsys/system/explorer/taskbar/taskbar.cpp
+++ b/reactos/subsys/system/explorer/taskbar/taskbar.cpp
@@ -137,6 +137,9 @@ LRESULT TaskBar::WndProc(UINT nmsg, WPARAM wparam, LPARAM lparam)
 		Refresh();
 		break;}
 */
+	  case PM_GET_LAST_ACTIVE:
+		return (LRESULT)(HWND)_last_foreground_wnd;
+
 	  default: def:
 		return super::WndProc(nmsg, wparam, lparam);
 	}