diff --git a/Iceshrimp.Backend/Core/Helpers/CryptographyHelpers.cs b/Iceshrimp.Backend/Core/Helpers/CryptographyHelpers.cs
index fb743969..79538a0d 100644
--- a/Iceshrimp.Backend/Core/Helpers/CryptographyHelpers.cs
+++ b/Iceshrimp.Backend/Core/Helpers/CryptographyHelpers.cs
@@ -4,9 +4,7 @@ namespace Iceshrimp.Backend.Core.Helpers;
 
 public static class CryptographyHelpers
 {
-	public static string GenerateRandomString(int length) =>
-		Convert.ToBase64String(RandomNumberGenerator.GetBytes(length));
-
-	public static string GenerateRandomHexString(int length) =>
-		Convert.ToHexString(RandomNumberGenerator.GetBytes(length)).ToLowerInvariant();
+	private const string AlphaNumCharset = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+	public static string GenerateRandomString(int length) => RandomNumberGenerator.GetString(AlphaNumCharset, length);
+	public static string GenerateRandomHexString(int length) => RandomNumberGenerator.GetHexString(length, true);
 }
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