diff --git a/components/script/dom/bindings/reflector.rs b/components/script/dom/bindings/reflector.rs
index 0a5afbce487..c888686974e 100644
--- a/components/script/dom/bindings/reflector.rs
+++ b/components/script/dom/bindings/reflector.rs
@@ -11,7 +11,7 @@ use crate::DomTypes;
 use crate::dom::bindings::conversions::DerivedFrom;
 use crate::dom::bindings::root::DomRoot;
 use crate::dom::globalscope::GlobalScope;
-use crate::realms::InRealm;
+use crate::realms::{InRealm, enter_realm};
 use crate::script_runtime::CanGc;
 
 /// Create the reflector for a new DOM object and yield ownership to the
@@ -42,7 +42,16 @@ where
 }
 
 pub(crate) trait DomGlobal {
+    /// Returns the [relevant global] in whatever realm is currently active.
+    ///
+    /// [relevant global]: https://html.spec.whatwg.org/multipage/#concept-relevant-global
     fn global_(&self, realm: InRealm) -> DomRoot<GlobalScope>;
+
+    /// Returns the [relevant global] in the same realm as the callee object.
+    /// If you know the callee's realm is already the current realm, it is
+    /// more efficient to call [DomGlobal::global_] instead.
+    ///
+    /// [relevant global]: https://html.spec.whatwg.org/multipage/#concept-relevant-global
     fn global(&self) -> DomRoot<GlobalScope>;
 }
 
@@ -51,7 +60,8 @@ impl<T: DomGlobalGeneric<crate::DomTypeHolder>> DomGlobal for T {
         <Self as DomGlobalGeneric<crate::DomTypeHolder>>::global_(self, realm)
     }
     fn global(&self) -> DomRoot<GlobalScope> {
-        <Self as DomGlobalGeneric<crate::DomTypeHolder>>::global(self)
+        let realm = enter_realm(self);
+        <Self as DomGlobalGeneric<crate::DomTypeHolder>>::global_(self, InRealm::entered(&realm))
     }
 }
 
diff --git a/components/script_bindings/reflector.rs b/components/script_bindings/reflector.rs
index 6b6ae03cb69..4b91b0536fc 100644
--- a/components/script_bindings/reflector.rs
+++ b/components/script_bindings/reflector.rs
@@ -8,7 +8,7 @@ use malloc_size_of_derive::MallocSizeOf;
 
 use crate::interfaces::GlobalScopeHelpers;
 use crate::iterable::{Iterable, IterableIterator};
-use crate::realms::{AlreadyInRealm, InRealm};
+use crate::realms::InRealm;
 use crate::root::{Dom, DomRoot, Root};
 use crate::script_runtime::{CanGc, JSContext};
 use crate::{DomTypes, JSTraceable};
@@ -108,17 +108,6 @@ pub trait DomGlobalGeneric<D: DomTypes>: DomObject {
     {
         D::GlobalScope::from_reflector(self, realm)
     }
-
-    /// Returns the [`GlobalScope`] of the realm that the [`DomObject`] was created in.  If this
-    /// object is a `Node`, this will be different from it's owning `Document` if adopted by. For
-    /// `Node`s it's almost always better to use `NodeTraits::owning_global`.
-    fn global(&self) -> DomRoot<D::GlobalScope>
-    where
-        Self: Sized,
-    {
-        let realm = AlreadyInRealm::assert_for_cx(D::GlobalScope::get_cx());
-        D::GlobalScope::from_reflector(self, InRealm::already(&realm))
-    }
 }
 
 impl<D: DomTypes, T: DomObject> DomGlobalGeneric<D> for T {}