1 files changed, 3 insertions, 1 deletions
diff --git a/components/script/script_runtime.rs b/components/script/script_runtime.rs
index 151db669405..50d516280fc 100644
--- a/components/script/script_runtime.rs
+++ b/components/script/script_runtime.rs
@@ -61,7 +61,7 @@ use js::jsapi::{
     JSJitCompilerOption, JS_SetOffthreadIonCompilationEnabled, JS_SetParallelParsingEnabled,
 };
 use js::jsapi::{JSObject, PromiseRejectionHandlingState, SetPreserveWrapperCallbacks};
-use js::jsapi::{JSSecurityCallbacks, JS_SetSecurityCallbacks};
+use js::jsapi::{JSSecurityCallbacks, JS_InitDestroyPrincipalsCallback, JS_SetSecurityCallbacks};
 use js::jsapi::{SetJobQueue, SetProcessBuildIdOp, SetPromiseRejectionTrackerCallback};
 use js::jsval::UndefinedValue;
 use js::panic::wrap_panic;
@@ -475,6 +475,8 @@ unsafe fn new_rt_and_cx_with_parent(
 
     JS_SetSecurityCallbacks(cx, &SECURITY_CALLBACKS);
 
+    JS_InitDestroyPrincipalsCallback(cx, Some(utils::destroy_servo_jsprincipal));
+
     // Needed for debug assertions about whether GC is running.
     if cfg!(debug_assertions) {
         JS_SetGCCallback(cx, Some(debug_gc_callback), ptr::null_mut());