diff --git a/AK/NoAllocationGuard.h b/AK/NoAllocationGuard.h
deleted file mode 100644
index 8cc3c846ba..0000000000
--- a/AK/NoAllocationGuard.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2022, kleines Filmröllchen <filmroellchen@serenityos.org>.
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#pragma once
-
-#include <AK/Forward.h>
-#include <AK/Noncopyable.h>
-
-#if defined(AK_OS_SERENITY)
-#    include <mallocdefs.h>
-#endif
-
-namespace AK {
-
-class NoAllocationGuard {
-    AK_MAKE_NONCOPYABLE(NoAllocationGuard);
-    AK_MAKE_NONMOVABLE(NoAllocationGuard);
-
-public:
-    NoAllocationGuard()
-        : m_allocation_enabled_previously(get_thread_allocation_state())
-    {
-        set_thread_allocation_state(false);
-    }
-
-    ~NoAllocationGuard()
-    {
-        set_thread_allocation_state(m_allocation_enabled_previously);
-    }
-
-private:
-    static bool get_thread_allocation_state()
-    {
-#if defined(AK_OS_SERENITY)
-        // This extern thread-local lives in our LibC, which doesn't exist on other systems.
-        return s_allocation_enabled;
-#else
-        return true;
-#endif
-    }
-
-    static void set_thread_allocation_state(bool value)
-    {
-#if defined(AK_OS_SERENITY)
-        s_allocation_enabled = value;
-#else
-        (void)value;
-#endif
-    }
-
-    bool m_allocation_enabled_previously { true };
-};
-
-}
-
-#if USING_AK_GLOBALLY
-using AK::NoAllocationGuard;
-#endif
diff --git a/Meta/gn/secondary/AK/BUILD.gn b/Meta/gn/secondary/AK/BUILD.gn
index 4e9a9b25fa..ee31849cad 100644
--- a/Meta/gn/secondary/AK/BUILD.gn
+++ b/Meta/gn/secondary/AK/BUILD.gn
@@ -121,7 +121,6 @@ shared_library("AK") {
     "MemoryStream.cpp",
     "MemoryStream.h",
     "NeverDestroyed.h",
-    "NoAllocationGuard.h",
     "Noncopyable.h",
     "NonnullOwnPtr.h",
     "NonnullRefPtr.h",
diff --git a/Tests/AK/TestFixedArray.cpp b/Tests/AK/TestFixedArray.cpp
index ec4f180e56..9ad80c57be 100644
--- a/Tests/AK/TestFixedArray.cpp
+++ b/Tests/AK/TestFixedArray.cpp
@@ -8,7 +8,6 @@
 #include <LibTest/TestSuite.h>
 
 #include <AK/FixedArray.h>
-#include <AK/NoAllocationGuard.h>
 
 TEST_CASE(construct)
 {
@@ -55,36 +54,3 @@ TEST_CASE(move)
     EXPECT_EQ(moved_to_array.size(), 6u);
     EXPECT_EQ(moved_from_array.size(), 0u);
 }
-
-TEST_CASE(no_allocation)
-{
-    FixedArray<int> array = FixedArray<int>::must_create_but_fixme_should_propagate_errors(5);
-    EXPECT_NO_DEATH("Assignments", [&]() {
-        NoAllocationGuard guard;
-        array[0] = 0;
-        array[1] = 1;
-        array[2] = 2;
-        array[4] = array[1];
-        array[3] = array[0] + array[2];
-    }());
-
-    EXPECT_NO_DEATH("Move", [&]() {
-        FixedArray<int> moved_from_array = FixedArray<int>::must_create_but_fixme_should_propagate_errors(6);
-        // We need an Optional here to ensure that the NoAllocationGuard is
-        // destroyed before the moved_to_array, because that would call free
-        Optional<FixedArray<int>> moved_to_array;
-
-        {
-            NoAllocationGuard guard;
-            moved_to_array.emplace(move(moved_from_array));
-        }
-    }());
-
-    EXPECT_NO_DEATH("Swap", [&]() {
-        FixedArray<int> target_for_swapping;
-        {
-            NoAllocationGuard guard;
-            array.swap(target_for_swapping);
-        }
-    }());
-}
diff --git a/Tests/AK/TestHashMap.cpp b/Tests/AK/TestHashMap.cpp
index 0086fe2e1b..db3d470ab3 100644
--- a/Tests/AK/TestHashMap.cpp
+++ b/Tests/AK/TestHashMap.cpp
@@ -358,8 +358,6 @@ TEST_CASE(move_assign)
     EXPECT_EQ(second.size(), static_cast<size_t>(0));
     EXPECT_EQ(second.get(2), Optional<int>());
 
-    // 'Hashtable::operator=(Hashtable&&)' allocates temporarily an empty table,
-    // so we can't use NoAllocationGuard here. :(
     second = move(orig);
 
     EXPECT_EQ(orig.size(), static_cast<size_t>(0));