diff --git a/PeyrSharp.Extensions/StringExtensions.cs b/PeyrSharp.Extensions/StringExtensions.cs
index ddf5013..14fbbf8 100644
--- a/PeyrSharp.Extensions/StringExtensions.cs
+++ b/PeyrSharp.Extensions/StringExtensions.cs
@@ -184,6 +184,13 @@ public static string DecryptAes(this string encrypted, string key)
 		/// <returns>The input string with the first letter uppercased.</returns>
 		public static string ToUpperAt(this string s) => string.IsNullOrEmpty(s) ? s : char.ToUpper(s[0]) + s[1..];
 
+		/// <summary>
+		/// Uppercases the first letter of a string.
+		/// </summary>
+		/// <param name="s">The string to capitalize.</param>
+		/// <returns>The input string with the first letter uppercased.</returns>
+		public static string ToLowerAt(this string s) => string.IsNullOrEmpty(s) ? s : char.ToLower(s[0]) + s[1..];
+
 		/// <summary>
 		/// Reverses a <see cref="string"/>.
 		/// </summary>