diff --git a/modules/libpref/src/init/all.js b/modules/libpref/src/init/all.js
index d493b05a012..e2af0330c98 100644
--- a/modules/libpref/src/init/all.js
+++ b/modules/libpref/src/init/all.js
@@ -1620,8 +1620,13 @@ pref("intl.enable_tsf_support", false);
 pref("intl.tsf.on_layout_change_interval", 100);
 #endif
 
+#ifdef WINCE
+// bug 506798 - can't type in bookmarks panel on WinCE
+pref("ui.panel.default_level_parent", true);
+#else
 // See bug 448927, on topmost panel, some IMEs are not usable on Windows.
 pref("ui.panel.default_level_parent", false);
+#endif
 
 pref("mousewheel.system_scroll_override_on_root_content.enabled", true);