diff --git a/Userland/Libraries/LibJS/Runtime/NativeFunction.cpp b/Userland/Libraries/LibJS/Runtime/NativeFunction.cpp
index a8ee8e7883..ddc0bed9b9 100644
--- a/Userland/Libraries/LibJS/Runtime/NativeFunction.cpp
+++ b/Userland/Libraries/LibJS/Runtime/NativeFunction.cpp
@@ -16,7 +16,7 @@ namespace JS {
 
 // 10.3.3 CreateBuiltinFunction ( behaviour, length, name, additionalInternalSlotsList [ , realm [ , prototype [ , prefix ] ] ] ), https://tc39.es/ecma262/#sec-createbuiltinfunction
 // NOTE: This doesn't consider additionalInternalSlotsList, which is rarely used, and can either be implemented using only the `function` lambda, or needs a NativeFunction subclass.
-NativeFunction* NativeFunction::create(Realm& allocating_realm, Function<ThrowCompletionOr<Value>(VM&)> behaviour, i32 length, PropertyKey const& name, Optional<Realm*> realm, Optional<Object*> prototype, Optional<StringView> const& prefix)
+NativeFunction* NativeFunction::create(Realm& allocating_realm, SafeFunction<ThrowCompletionOr<Value>(VM&)> behaviour, i32 length, PropertyKey const& name, Optional<Realm*> realm, Optional<Object*> prototype, Optional<StringView> const& prefix)
 {
     auto& vm = allocating_realm.vm();
 
@@ -51,12 +51,12 @@ NativeFunction* NativeFunction::create(Realm& allocating_realm, Function<ThrowCo
     return function;
 }
 
-NativeFunction* NativeFunction::create(Realm& realm, FlyString const& name, Function<ThrowCompletionOr<Value>(VM&)> function)
+NativeFunction* NativeFunction::create(Realm& realm, FlyString const& name, SafeFunction<ThrowCompletionOr<Value>(VM&)> function)
 {
     return realm.heap().allocate<NativeFunction>(realm, name, move(function), *realm.intrinsics().function_prototype());
 }
 
-NativeFunction::NativeFunction(Function<ThrowCompletionOr<Value>(VM&)> native_function, Object* prototype, Realm& realm)
+NativeFunction::NativeFunction(SafeFunction<ThrowCompletionOr<Value>(VM&)> native_function, Object* prototype, Realm& realm)
     : FunctionObject(realm, prototype)
     , m_native_function(move(native_function))
     , m_realm(&realm)
@@ -73,7 +73,7 @@ NativeFunction::NativeFunction(Object& prototype)
 {
 }
 
-NativeFunction::NativeFunction(FlyString name, Function<ThrowCompletionOr<Value>(VM&)> native_function, Object& prototype)
+NativeFunction::NativeFunction(FlyString name, SafeFunction<ThrowCompletionOr<Value>(VM&)> native_function, Object& prototype)
     : FunctionObject(prototype)
     , m_name(move(name))
     , m_native_function(move(native_function))
diff --git a/Userland/Libraries/LibJS/Runtime/NativeFunction.h b/Userland/Libraries/LibJS/Runtime/NativeFunction.h
index 510a255d42..4e15d89bf5 100644
--- a/Userland/Libraries/LibJS/Runtime/NativeFunction.h
+++ b/Userland/Libraries/LibJS/Runtime/NativeFunction.h
@@ -8,11 +8,11 @@
 #pragma once
 
 #include <AK/Badge.h>
-#include <AK/Function.h>
 #include <AK/Optional.h>
 #include <LibJS/Runtime/Completion.h>
 #include <LibJS/Runtime/FunctionObject.h>
 #include <LibJS/Runtime/PropertyKey.h>
+#include <LibJS/SafeFunction.h>
 
 namespace JS {
 
@@ -20,8 +20,8 @@ class NativeFunction : public FunctionObject {
     JS_OBJECT(NativeFunction, FunctionObject);
 
 public:
-    static NativeFunction* create(Realm&, Function<ThrowCompletionOr<Value>(VM&)> behaviour, i32 length, PropertyKey const& name, Optional<Realm*> = {}, Optional<Object*> prototype = {}, Optional<StringView> const& prefix = {});
-    static NativeFunction* create(Realm&, FlyString const& name, Function<ThrowCompletionOr<Value>(VM&)>);
+    static NativeFunction* create(Realm&, SafeFunction<ThrowCompletionOr<Value>(VM&)> behaviour, i32 length, PropertyKey const& name, Optional<Realm*> = {}, Optional<Object*> prototype = {}, Optional<StringView> const& prefix = {});
+    static NativeFunction* create(Realm&, FlyString const& name, SafeFunction<ThrowCompletionOr<Value>(VM&)>);
 
     virtual void initialize(Realm&) override { }
     virtual ~NativeFunction() override = default;
@@ -44,8 +44,8 @@ public:
 
 protected:
     NativeFunction(FlyString name, Object& prototype);
-    NativeFunction(Function<ThrowCompletionOr<Value>(VM&)>, Object* prototype, Realm& realm);
-    NativeFunction(FlyString name, Function<ThrowCompletionOr<Value>(VM&)>, Object& prototype);
+    NativeFunction(SafeFunction<ThrowCompletionOr<Value>(VM&)>, Object* prototype, Realm& realm);
+    NativeFunction(FlyString name, SafeFunction<ThrowCompletionOr<Value>(VM&)>, Object& prototype);
     explicit NativeFunction(Object& prototype);
 
 private:
@@ -53,7 +53,7 @@ private:
 
     FlyString m_name;
     Optional<FlyString> m_initial_name; // [[InitialName]]
-    Function<ThrowCompletionOr<Value>(VM&)> m_native_function;
+    SafeFunction<ThrowCompletionOr<Value>(VM&)> m_native_function;
     Realm* m_realm { nullptr };
 };