diff -ru xfwm4-4.10.0-orig/src/events.c xfwm4-4.10.0/src/events.c
--- xfwm4-4.10.0-orig/src/events.c	2012-04-28 22:56:34.000000000 +0200
+++ xfwm4-4.10.0/src/events.c	2013-03-16 14:25:54.000000000 +0100
@@ -2809,6 +2809,8 @@
 
         setNetWorkarea (display_info, screen_info->xroot, screen_info->workspace_count,
                         screen_info->width, screen_info->height, screen_info->margins);
+        setNetDesktopInfo (display_info, screen_info->xroot, screen_info->current_ws,
+                           screen_info->width, screen_info->height);
 
         placeSidewalks (screen_info, screen_info->params->wrap_workspaces);
 
@@ -2862,6 +2864,8 @@
 
         setNetWorkarea (display_info, screen_info->xroot, screen_info->workspace_count,
                         screen_info->width, screen_info->height, screen_info->margins);
+        setNetDesktopInfo (display_info, screen_info->xroot, screen_info->current_ws,
+                           screen_info->width, screen_info->height);
 
         placeSidewalks (screen_info, screen_info->params->wrap_workspaces);
     }
diff -ru xfwm4-4.10.0-orig/src/hints.c xfwm4-4.10.0/src/hints.c
--- xfwm4-4.10.0-orig/src/hints.c	2012-04-28 22:56:34.000000000 +0200
+++ xfwm4-4.10.0/src/hints.c	2013-03-16 13:20:20.000000000 +0100
@@ -584,10 +584,10 @@
 }
 
 void
-initNetDesktopInfo (DisplayInfo *display_info, Window root, int workspace, int width, int height)
+setNetDesktopInfo (DisplayInfo *display_info, Window root, int workspace, int width, int height)
 {
     unsigned long data[2];
-    TRACE ("entering initNetDesktopInfo");
+    TRACE ("entering setNetDesktopInfo");
     data[0] = width;
     data[1] = height;
     XChangeProperty (display_info->dpy, root, display_info->atoms[NET_DESKTOP_GEOMETRY],
diff -ru xfwm4-4.10.0-orig/src/main.c xfwm4-4.10.0/src/main.c
--- xfwm4-4.10.0-orig/src/main.c	2012-04-28 22:56:34.000000000 +0200
+++ xfwm4-4.10.0/src/main.c	2013-03-16 13:04:08.000000000 +0100
@@ -497,7 +497,7 @@
         screen_info->current_ws = getNetCurrentDesktop (main_display_info, screen_info->xroot);
         setUTF8StringHint (main_display_info, screen_info->xfwm4_win, NET_WM_NAME, "Xfwm4");
         setNetSupportedHint (main_display_info, screen_info->xroot, screen_info->xfwm4_win);
-        initNetDesktopInfo (main_display_info, screen_info->xroot, screen_info->current_ws,
+        setNetDesktopInfo (main_display_info, screen_info->xroot, screen_info->current_ws,
                                    screen_info->width,
                                    screen_info->height);
         workspaceUpdateArea (screen_info);