diff --git a/libraries/libstratosphere/include/stratosphere/sf/sf_object_impl_factory.hpp b/libraries/libstratosphere/include/stratosphere/sf/sf_object_impl_factory.hpp
index 6c442fac2..c0fb5a60b 100644
--- a/libraries/libstratosphere/include/stratosphere/sf/sf_object_impl_factory.hpp
+++ b/libraries/libstratosphere/include/stratosphere/sf/sf_object_impl_factory.hpp
@@ -31,7 +31,7 @@ namespace ams::sf {
             public:
                 class Object;
                 using Allocator = StatelessDummyAllocator;
-                using StatelessAllocator = typename Policy::StatelessAllocator<Object>;
+                using StatelessAllocator = typename Policy::template StatelessAllocator<Object>;
 
                 class Object final : private ::ams::sf::impl::ServiceObjectImplBase2, public Base {
                     NON_COPYABLE(Object);
diff --git a/libraries/libstratosphere/include/stratosphere/tipc/tipc_server_manager.hpp b/libraries/libstratosphere/include/stratosphere/tipc/tipc_server_manager.hpp
index 53c6b3f95..951de4db8 100644
--- a/libraries/libstratosphere/include/stratosphere/tipc/tipc_server_manager.hpp
+++ b/libraries/libstratosphere/include/stratosphere/tipc/tipc_server_manager.hpp
@@ -747,7 +747,7 @@ namespace ams::tipc {
                 using PortManager = PortManagerImpl;
             private:
                 PortManager m_port_manager;
-                PortInfo::Allocator m_port_allocator;
+                typename PortInfo::Allocator m_port_allocator;
             public:
                 constexpr ServerManagerImpl() : m_port_manager(), m_port_allocator() { /* ... */ }
 
diff --git a/libraries/libvapours/include/vapours/util/util_intrusive_red_black_tree.hpp b/libraries/libvapours/include/vapours/util/util_intrusive_red_black_tree.hpp
index f22f8ea68..00a7201e3 100644
--- a/libraries/libvapours/include/vapours/util/util_intrusive_red_black_tree.hpp
+++ b/libraries/libvapours/include/vapours/util/util_intrusive_red_black_tree.hpp
@@ -295,7 +295,7 @@ namespace ams::util {
                 private:
                     constexpr explicit ALWAYS_INLINE Iterator(ImplIterator it) : m_impl(it) { /* ... */ }
 
-                    constexpr explicit ALWAYS_INLINE Iterator(ImplIterator::pointer p) : m_impl(p) { /* ... */ }
+                    constexpr explicit ALWAYS_INLINE Iterator(typename ImplIterator::pointer p) : m_impl(p) { /* ... */ }
 
                     constexpr ALWAYS_INLINE ImplIterator GetImplIterator() const {
                         return m_impl;
diff --git a/libraries/libvapours/include/vapours/util/util_optional.hpp b/libraries/libvapours/include/vapours/util/util_optional.hpp
index f5f0e9e32..873c1a1b3 100644
--- a/libraries/libvapours/include/vapours/util/util_optional.hpp
+++ b/libraries/libvapours/include/vapours/util/util_optional.hpp
@@ -225,7 +225,7 @@ namespace ams::util {
         template<typename T, typename Derived>
         class OptionalBaseImpl {
             protected:
-                using StoredType = std::remove_const<T>::type;
+                using StoredType = std::remove_const_t<T>;
 
                 template<typename... Args>
                 constexpr void ConstructImpl(Args &&... args) { static_cast<Derived *>(this)->m_payload.Construct(std::forward<Args>(args)...); }