diff --git a/AK/NonnullOwnPtr.h b/AK/NonnullOwnPtr.h
index 99405847a72..5fa314b927f 100644
--- a/AK/NonnullOwnPtr.h
+++ b/AK/NonnullOwnPtr.h
@@ -158,7 +158,8 @@ make(Args&&... args)
 
 template<typename T>
 struct Traits<NonnullOwnPtr<T>> : public GenericTraits<NonnullOwnPtr<T>> {
-    using PeekType = const T*;
+    using PeekType = T*;
+    using ConstPeekType = const T*;
     static unsigned hash(const NonnullOwnPtr<T>& p) { return int_hash((u32)p.ptr()); }
     static bool equals(const NonnullOwnPtr<T>& a, const NonnullOwnPtr<T>& b) { return a.ptr() == b.ptr(); }
 };
diff --git a/AK/OwnPtr.h b/AK/OwnPtr.h
index 2ace9a4cea1..416af312e2b 100644
--- a/AK/OwnPtr.h
+++ b/AK/OwnPtr.h
@@ -193,7 +193,8 @@ inline void swap(OwnPtr<T>& a, OwnPtr<U>& b)
 
 template<typename T>
 struct Traits<OwnPtr<T>> : public GenericTraits<OwnPtr<T>> {
-    using PeekType = const T*;
+    using PeekType = T*;
+    using ConstPeekType = const T*;
     static unsigned hash(const OwnPtr<T>& p) { return ptr_hash(p.ptr()); }
     static bool equals(const OwnPtr<T>& a, const OwnPtr<T>& b) { return a.ptr() == b.ptr(); }
 };
diff --git a/AK/RefPtr.h b/AK/RefPtr.h
index e85ba1c93d4..687641836a4 100644
--- a/AK/RefPtr.h
+++ b/AK/RefPtr.h
@@ -451,7 +451,8 @@ struct Formatter<RefPtr<T>> : Formatter<const T*> {
 
 template<typename T>
 struct Traits<RefPtr<T>> : public GenericTraits<RefPtr<T>> {
-    using PeekType = const T*;
+    using PeekType = T*;
+    using ConstPeekType = const T*;
     static unsigned hash(const RefPtr<T>& p) { return ptr_hash(p.ptr()); }
     static bool equals(const RefPtr<T>& a, const RefPtr<T>& b) { return a.ptr() == b.ptr(); }
 };
diff --git a/AK/Traits.h b/AK/Traits.h
index aa0630c32ab..19cc078122f 100644
--- a/AK/Traits.h
+++ b/AK/Traits.h
@@ -14,6 +14,7 @@ namespace AK {
 template<typename T>
 struct GenericTraits {
     using PeekType = T;
+    using ConstPeekType = T;
     static constexpr bool is_trivial() { return false; }
     static constexpr bool equals(const T& a, const T& b) { return a == b; }
 };