diff --git a/dlls/winex11.drv/systray.c b/dlls/winex11.drv/systray.c
index 20f6d356516..7d5a0e964cb 100644
--- a/dlls/winex11.drv/systray.c
+++ b/dlls/winex11.drv/systray.c
@@ -150,7 +150,7 @@ static void create_tooltip(struct tray_icon *icon)
     }
 }
 
-static void update_balloon_position(void)
+void update_systray_balloon_position(void)
 {
     RECT rect;
     POINT pos;
@@ -187,7 +187,7 @@ static void balloon_create_timer( struct tray_icon *icon )
         SendMessageW( balloon_window, TTM_SETTITLEW, icon->info_flags, (LPARAM)icon->info_title );
     balloon_icon = icon;
     balloon_pos.x = balloon_pos.y = MAXLONG;
-    update_balloon_position();
+    update_systray_balloon_position();
     SendMessageW( balloon_window, TTM_TRACKACTIVATE, TRUE, (LPARAM)&ti );
     KillTimer( icon->window, BALLOON_CREATE_TIMER );
     SetTimer( icon->window, BALLOON_SHOW_TIMER, icon->info_timeout, NULL );
@@ -292,7 +292,7 @@ static LRESULT WINAPI standalone_tray_wndproc( HWND hwnd, UINT msg, WPARAM wpara
     switch (msg)
     {
     case WM_MOVE:
-        update_balloon_position();
+        update_systray_balloon_position();
         break;
     case WM_CLOSE:
         ShowWindow( hwnd, SW_HIDE );
@@ -419,7 +419,7 @@ static LRESULT WINAPI tray_icon_wndproc(HWND hwnd, UINT msg, WPARAM wparam, LPAR
         return 0;
 
     case WM_WINDOWPOSCHANGED:
-        update_balloon_position();
+        update_systray_balloon_position();
         break;
 
     case WM_TIMER:
diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index 2447a5f7855..3803efde933 100644
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -2061,6 +2061,9 @@ static LRESULT WINAPI foreign_window_proc( HWND hwnd, UINT msg, WPARAM wparam, L
 {
     switch(msg)
     {
+    case WM_WINDOWPOSCHANGED:
+        update_systray_balloon_position();
+        break;
     case WM_PARENTNOTIFY:
         if (LOWORD(wparam) == WM_DESTROY)
         {
diff --git a/dlls/winex11.drv/x11drv.h b/dlls/winex11.drv/x11drv.h
index f48b51f7718..062d0777ab5 100644
--- a/dlls/winex11.drv/x11drv.h
+++ b/dlls/winex11.drv/x11drv.h
@@ -784,6 +784,7 @@ extern void update_user_time( Time time );
 extern void update_net_wm_states( Display *display, struct x11drv_win_data *data );
 extern void make_window_embedded( Display *display, struct x11drv_win_data *data );
 extern void change_systray_owner( Display *display, Window systray_window );
+extern void update_systray_balloon_position(void);
 extern HWND create_foreign_window( Display *display, Window window );
 
 static inline void mirror_rect( const RECT *window_rect, RECT *rect )