diff --git a/modules/libpref/src/init/all.js b/modules/libpref/src/init/all.js
index 1b71396eb3f..177566de4d2 100644
--- a/modules/libpref/src/init/all.js
+++ b/modules/libpref/src/init/all.js
@@ -465,7 +465,7 @@ pref("dom.disable_window_open_feature.directories", false);
 pref("dom.disable_window_open_feature.personalbar", false);
 pref("dom.disable_window_open_feature.menubar",     false);
 pref("dom.disable_window_open_feature.scrollbars",  false);
-pref("dom.disable_window_open_feature.resizable",   false);
+pref("dom.disable_window_open_feature.resizable",   true);
 pref("dom.disable_window_open_feature.minimizable", false);
 pref("dom.disable_window_open_feature.status",      true);