diff --git a/AK/HashMap.h b/AK/HashMap.h
index 50abecd6380..4d61cede6ae 100644
--- a/AK/HashMap.h
+++ b/AK/HashMap.h
@@ -77,7 +77,7 @@ public:
     }
 
     template<typename TUnaryPredicate>
-    bool remove_all_matching(TUnaryPredicate predicate)
+    bool remove_all_matching(TUnaryPredicate const& predicate)
     {
         return m_table.template remove_all_matching([&](auto& entry) {
             return predicate(entry.key, entry.value);
diff --git a/AK/HashTable.h b/AK/HashTable.h
index 14478b47011..c9cfbabfa90 100644
--- a/AK/HashTable.h
+++ b/AK/HashTable.h
@@ -422,7 +422,7 @@ public:
     }
 
     template<typename TUnaryPredicate>
-    bool remove_all_matching(TUnaryPredicate predicate)
+    bool remove_all_matching(TUnaryPredicate const& predicate)
     {
         size_t removed_count = 0;
         for (size_t i = 0; i < m_capacity; ++i) {
diff --git a/AK/Vector.h b/AK/Vector.h
index a68628282e1..c56761e369a 100644
--- a/AK/Vector.h
+++ b/AK/Vector.h
@@ -163,7 +163,7 @@ public:
     VisibleType& last() { return at(size() - 1); }
 
     template<typename TUnaryPredicate>
-    Optional<VisibleType&> first_matching(TUnaryPredicate predicate) requires(!contains_reference)
+    Optional<VisibleType&> first_matching(TUnaryPredicate const& predicate) requires(!contains_reference)
     {
         for (size_t i = 0; i < size(); ++i) {
             if (predicate(at(i))) {
@@ -174,7 +174,7 @@ public:
     }
 
     template<typename TUnaryPredicate>
-    Optional<VisibleType const&> first_matching(TUnaryPredicate predicate) const requires(!contains_reference)
+    Optional<VisibleType const&> first_matching(TUnaryPredicate const& predicate) const requires(!contains_reference)
     {
         for (size_t i = 0; i < size(); ++i) {
             if (predicate(at(i))) {
@@ -185,7 +185,7 @@ public:
     }
 
     template<typename TUnaryPredicate>
-    Optional<VisibleType&> last_matching(TUnaryPredicate predicate) requires(!contains_reference)
+    Optional<VisibleType&> last_matching(TUnaryPredicate const& predicate) requires(!contains_reference)
     {
         for (ssize_t i = size() - 1; i >= 0; --i) {
             if (predicate(at(i))) {
@@ -233,7 +233,7 @@ public:
     }
 
     template<typename TUnaryPredicate, typename U = T>
-    void insert_before_matching(U&& value, TUnaryPredicate predicate, size_t first_index = 0, size_t* inserted_index = nullptr) requires(CanBePlacedInsideVector<U>)
+    void insert_before_matching(U&& value, TUnaryPredicate const& predicate, size_t first_index = 0, size_t* inserted_index = nullptr) requires(CanBePlacedInsideVector<U>)
     {
         MUST(try_insert_before_matching(forward<U>(value), predicate, first_index, inserted_index));
     }
@@ -415,7 +415,7 @@ public:
     }
 
     template<typename TUnaryPredicate>
-    bool remove_first_matching(TUnaryPredicate predicate)
+    bool remove_first_matching(TUnaryPredicate const& predicate)
     {
         for (size_t i = 0; i < size(); ++i) {
             if (predicate(at(i))) {
@@ -427,7 +427,7 @@ public:
     }
 
     template<typename TUnaryPredicate>
-    bool remove_all_matching(TUnaryPredicate predicate)
+    bool remove_all_matching(TUnaryPredicate const& predicate)
     {
         bool something_was_removed = false;
         for (size_t i = 0; i < size();) {
@@ -507,7 +507,7 @@ public:
     }
 
     template<typename TUnaryPredicate, typename U = T>
-    ErrorOr<void> try_insert_before_matching(U&& value, TUnaryPredicate predicate, size_t first_index = 0, size_t* inserted_index = nullptr) requires(CanBePlacedInsideVector<U>)
+    ErrorOr<void> try_insert_before_matching(U&& value, TUnaryPredicate const& predicate, size_t first_index = 0, size_t* inserted_index = nullptr) requires(CanBePlacedInsideVector<U>)
     {
         for (size_t i = first_index; i < size(); ++i) {
             if (predicate(at(i))) {
diff --git a/Userland/Libraries/LibGUI/ModelSelection.cpp b/Userland/Libraries/LibGUI/ModelSelection.cpp
index 8e11c3f4231..6fac46b8f17 100644
--- a/Userland/Libraries/LibGUI/ModelSelection.cpp
+++ b/Userland/Libraries/LibGUI/ModelSelection.cpp
@@ -10,9 +10,9 @@
 
 namespace GUI {
 
-void ModelSelection::remove_all_matching(Function<bool(ModelIndex const&)> filter)
+void ModelSelection::remove_all_matching(Function<bool(ModelIndex const&)> const& filter)
 {
-    if (m_indices.remove_all_matching([&](ModelIndex const& index) { return filter(index); }))
+    if (m_indices.remove_all_matching(filter))
         notify_selection_changed();
 }
 
diff --git a/Userland/Libraries/LibGUI/ModelSelection.h b/Userland/Libraries/LibGUI/ModelSelection.h
index b89d632012e..79592159aad 100644
--- a/Userland/Libraries/LibGUI/ModelSelection.h
+++ b/Userland/Libraries/LibGUI/ModelSelection.h
@@ -76,7 +76,7 @@ public:
         return *m_indices.begin();
     }
 
-    void remove_all_matching(Function<bool(ModelIndex const&)> filter);
+    void remove_all_matching(Function<bool(ModelIndex const&)> const& filter);
 
     template<typename Function>
     void change_from_model(Badge<SortingProxyModel>, Function f)