diff --git a/src/core/hle/service/acc/profile_manager.cpp b/src/core/hle/service/acc/profile_manager.cpp
index beba92f640..f34f5af971 100644
--- a/src/core/hle/service/acc/profile_manager.cpp
+++ b/src/core/hle/service/acc/profile_manager.cpp
@@ -62,7 +62,7 @@ ResultCode ProfileManager::AddUser(const ProfileInfo& user) {
 
 /// Create a new user on the system. If the uuid of the user already exists, the user is not
 /// created.
-ResultCode ProfileManager::CreateNewUser(UUID uuid, const std::array<u8, 0x20>& username) {
+ResultCode ProfileManager::CreateNewUser(UUID uuid, const ProfileUsername& username) {
     if (user_count == MAX_USERS) {
         return ERROR_TOO_MANY_USERS;
     }
@@ -89,7 +89,7 @@ ResultCode ProfileManager::CreateNewUser(UUID uuid, const std::array<u8, 0x20>&
 /// specifically by allowing an std::string for the username. This is required specifically since
 /// we're loading a string straight from the config
 ResultCode ProfileManager::CreateNewUser(UUID uuid, const std::string& username) {
-    std::array<u8, 0x20> username_output;
+    ProfileUsername username_output;
     if (username.size() > username_output.size()) {
         std::copy_n(username.begin(), username_output.size(), username_output.begin());
     } else {
@@ -178,8 +178,8 @@ void ProfileManager::CloseUser(UUID uuid) {
 }
 
 /// Gets all valid user ids on the system
-std::array<UUID, MAX_USERS> ProfileManager::GetAllUsers() const {
-    std::array<UUID, MAX_USERS> output;
+UserIDArray ProfileManager::GetAllUsers() const {
+    UserIDArray output;
     std::transform(profiles.begin(), profiles.end(), output.begin(),
                    [](const ProfileInfo& p) { return p.user_uuid; });
     return output;
@@ -187,8 +187,8 @@ std::array<UUID, MAX_USERS> ProfileManager::GetAllUsers() const {
 
 /// Get all the open users on the system and zero out the rest of the data. This is specifically
 /// needed for GetOpenUsers and we need to ensure the rest of the output buffer is zero'd out
-std::array<UUID, MAX_USERS> ProfileManager::GetOpenUsers() const {
-    std::array<UUID, MAX_USERS> output;
+UserIDArray ProfileManager::GetOpenUsers() const {
+    UserIDArray output;
     std::transform(profiles.begin(), profiles.end(), output.begin(), [](const ProfileInfo& p) {
         if (p.is_open)
             return p.user_uuid;
@@ -205,7 +205,7 @@ UUID ProfileManager::GetLastOpenedUser() const {
 
 /// Return the users profile base and the unknown arbitary data.
 bool ProfileManager::GetProfileBaseAndData(boost::optional<size_t> index, ProfileBase& profile,
-                                           std::array<u8, MAX_DATA>& data) const {
+                                           ProfileData& data) const {
     if (GetProfileBase(index, profile)) {
         std::memcpy(data.data(), profiles[index.get()].data.data(), MAX_DATA);
         return true;
@@ -215,14 +215,14 @@ bool ProfileManager::GetProfileBaseAndData(boost::optional<size_t> index, Profil
 
 /// Return the users profile base and the unknown arbitary data.
 bool ProfileManager::GetProfileBaseAndData(UUID uuid, ProfileBase& profile,
-                                           std::array<u8, MAX_DATA>& data) const {
+                                           ProfileData& data) const {
     auto idx = GetUserIndex(uuid);
     return GetProfileBaseAndData(idx, profile, data);
 }
 
 /// Return the users profile base and the unknown arbitary data.
 bool ProfileManager::GetProfileBaseAndData(const ProfileInfo& user, ProfileBase& profile,
-                                           std::array<u8, MAX_DATA>& data) const {
+                                           ProfileData& data) const {
     return GetProfileBaseAndData(user.user_uuid, profile, data);
 }
 
diff --git a/src/core/hle/service/acc/profile_manager.h b/src/core/hle/service/acc/profile_manager.h
index d38f671885..cb06e6fa6f 100644
--- a/src/core/hle/service/acc/profile_manager.h
+++ b/src/core/hle/service/acc/profile_manager.h
@@ -48,20 +48,24 @@ struct UUID {
 };
 static_assert(sizeof(UUID) == 16, "UUID is an invalid size!");
 
+using ProfileUsername = std::array<u8, 0x20>;
+using ProfileData = std::array<u8, MAX_DATA>;
+using UserIDArray = std::array<UUID, MAX_USERS>;
+
 /// This holds general information about a users profile. This is where we store all the information
 /// based on a specific user
 struct ProfileInfo {
     UUID user_uuid;
-    std::array<u8, 0x20> username;
+    ProfileUsername username;
     u64 creation_time;
-    std::array<u8, MAX_DATA> data; // TODO(ognik): Work out what this is
+    ProfileData data; // TODO(ognik): Work out what this is
     bool is_open;
 };
 
 struct ProfileBase {
     UUID user_uuid;
     u64_le timestamp;
-    std::array<u8, 0x20> username;
+    ProfileUsername username;
 
     // Zero out all the fields to make the profile slot considered "Empty"
     void Invalidate() {
@@ -79,7 +83,7 @@ class ProfileManager {
 public:
     ProfileManager(); // TODO(ogniK): Load from system save
     ResultCode AddUser(const ProfileInfo& user);
-    ResultCode CreateNewUser(UUID uuid, const std::array<u8, 0x20>& username);
+    ResultCode CreateNewUser(UUID uuid, const ProfileUsername& username);
     ResultCode CreateNewUser(UUID uuid, const std::string& username);
     boost::optional<size_t> GetUserIndex(const UUID& uuid) const;
     boost::optional<size_t> GetUserIndex(const ProfileInfo& user) const;
@@ -87,18 +91,17 @@ public:
     bool GetProfileBase(UUID uuid, ProfileBase& profile) const;
     bool GetProfileBase(const ProfileInfo& user, ProfileBase& profile) const;
     bool GetProfileBaseAndData(boost::optional<size_t> index, ProfileBase& profile,
-                               std::array<u8, MAX_DATA>& data) const;
-    bool GetProfileBaseAndData(UUID uuid, ProfileBase& profile,
-                               std::array<u8, MAX_DATA>& data) const;
+                               ProfileData& data) const;
+    bool GetProfileBaseAndData(UUID uuid, ProfileBase& profile, ProfileData& data) const;
     bool GetProfileBaseAndData(const ProfileInfo& user, ProfileBase& profile,
-                               std::array<u8, MAX_DATA>& data) const;
+                               ProfileData& data) const;
     size_t GetUserCount() const;
     size_t GetOpenUserCount() const;
     bool UserExists(UUID uuid) const;
     void OpenUser(UUID uuid);
     void CloseUser(UUID uuid);
-    std::array<UUID, MAX_USERS> GetOpenUsers() const;
-    std::array<UUID, MAX_USERS> GetAllUsers() const;
+    UserIDArray GetOpenUsers() const;
+    UserIDArray GetAllUsers() const;
     UUID GetLastOpenedUser() const;
 
     bool CanSystemRegisterUser() const;