diff --git a/osu.Game/IO/WrappedStorage.cs b/osu.Game/IO/WrappedStorage.cs
index 95ff26db6a..5a8f4aef59 100644
--- a/osu.Game/IO/WrappedStorage.cs
+++ b/osu.Game/IO/WrappedStorage.cs
@@ -80,8 +80,7 @@ namespace osu.Game.IO
 
         public override Storage GetStorageForDirectory(string path)
         {
-            if (string.IsNullOrEmpty(path))
-                throw new ArgumentException("Must be non-null and not empty string", nameof(path));
+            ArgumentException.ThrowIfNullOrEmpty(path);
 
             if (!path.EndsWith(Path.DirectorySeparatorChar))
                 path += Path.DirectorySeparatorChar;
diff --git a/osu.Game/Online/API/OAuth.cs b/osu.Game/Online/API/OAuth.cs
index 4829310870..b06d9c6586 100644
--- a/osu.Game/Online/API/OAuth.cs
+++ b/osu.Game/Online/API/OAuth.cs
@@ -39,8 +39,8 @@ namespace osu.Game.Online.API
 
         internal void AuthenticateWithLogin(string username, string password)
         {
-            if (string.IsNullOrEmpty(username)) throw new ArgumentException("Missing username.");
-            if (string.IsNullOrEmpty(password)) throw new ArgumentException("Missing password.");
+            ArgumentException.ThrowIfNullOrEmpty(username);
+            ArgumentException.ThrowIfNullOrEmpty(password);
 
             var accessTokenRequest = new AccessTokenRequestPassword(username, password)
             {