diff --git a/src/Ashampoo.Translation.Systems.Formats.Abstractions/src/FormatOptions.cs b/src/Ashampoo.Translation.Systems.Formats.Abstractions/src/FormatOptions.cs
index fe0af93..2c565e3 100644
--- a/src/Ashampoo.Translation.Systems.Formats.Abstractions/src/FormatOptions.cs
+++ b/src/Ashampoo.Translation.Systems.Formats.Abstractions/src/FormatOptions.cs
@@ -28,23 +28,6 @@ public record FormatStringOption(string Name, bool Required = false) : FormatOpt
     public string Value { get; set; } = "";
 }
 
-/// <summary>
-/// Format option for a char value.
-/// </summary>
-/// <param name="Name">
-/// <inheritdoc cref="FormatOption"/>
-/// </param>
-/// <param name="Required">
-/// <inheritdoc cref="FormatOption"/>
-/// </param>
-public record FormatCharacterOption(string Name, bool Required = false) : FormatOption(Name, Required)
-{
-    /// <summary>
-    /// The value of the option.
-    /// </summary>
-    public string Value { get; set; } = ";";
-}
-
 /// <summary>
 /// Configuration object for a <see cref="IFormat"/> containing a list of <see cref="FormatOption">FormatOptions</see>.
 /// </summary>
diff --git a/src/Ashampoo.Translation.Systems.Formats/src/CSV/CsvFormat.cs b/src/Ashampoo.Translation.Systems.Formats/src/CSV/CsvFormat.cs
index 30900c4..01b4a45 100644
--- a/src/Ashampoo.Translation.Systems.Formats/src/CSV/CsvFormat.cs
+++ b/src/Ashampoo.Translation.Systems.Formats/src/CSV/CsvFormat.cs
@@ -81,32 +81,44 @@ private async Task GetHeaderInformation(StreamReader reader, FormatReadOptions o
             switch (headerLine[0].Trim())
             {
                 case "#Delimiter":
-                    if (char.IsWhiteSpace(Delimiter) && !string.IsNullOrWhiteSpace(headerLine[1]))
-                    {
-                        CsvFormatHeader.Delimiter = headerLine[1].Trim().ToCharArray().First();
-                    }
-
+                    TryApplyDelimiter(headerLine);
                     break;
                 case "#Source Language":
-                    if (string.IsNullOrWhiteSpace(options.SourceLanguage?.Value) &&
-                        !string.IsNullOrWhiteSpace(headerLine[1]))
-                    {
-                        Header.SourceLanguage = new Language(headerLine[1].Trim());
-                    }
-
+                    TryApplySourceLanguage(options, headerLine);
                     break;
                 case "#Target Language":
-                    if (string.IsNullOrWhiteSpace(options.TargetLanguage.Value) &&
-                        !string.IsNullOrWhiteSpace(headerLine[1]))
-                    {
-                        Header.TargetLanguage = new Language(headerLine[1].Trim());
-                    }
-
+                    TryApplyTargetLanguage(options, headerLine);
                     break;
             }
         }
     }
 
+    private void TryApplyTargetLanguage(FormatReadOptions options, string[] headerLine)
+    {
+        if (string.IsNullOrWhiteSpace(options.TargetLanguage.Value) &&
+            !string.IsNullOrWhiteSpace(headerLine[1]))
+        {
+            Header.TargetLanguage = new Language(headerLine[1].Trim());
+        }
+    }
+
+    private void TryApplySourceLanguage(FormatReadOptions options, string[] headerLine)
+    {
+        if (string.IsNullOrWhiteSpace(options.SourceLanguage?.Value) &&
+            !string.IsNullOrWhiteSpace(headerLine[1]))
+        {
+            Header.SourceLanguage = new Language(headerLine[1].Trim());
+        }
+    }
+
+    private void TryApplyDelimiter(string[] headerLine)
+    {
+        if (char.IsWhiteSpace(Delimiter) && !string.IsNullOrWhiteSpace(headerLine[1]))
+        {
+            CsvFormatHeader.Delimiter = headerLine[1].Trim()[0];
+        }
+    }
+
     private async Task ReadCsv(CsvReader reader)
     {
         await reader.ReadAsync();
@@ -200,7 +212,7 @@ private async Task<bool> ConfigureOptionsAsync(FormatReadOptions options)
 
             FormatStringOption targetLanguageOption = new("Target language", true);
             FormatStringOption sourceLanguageOption = new("Source language", true);
-            FormatCharacterOption delimiterOption = new("Delimiter", true);
+            FormatStringOption delimiterOption = new("Delimiter", true);
 
             List<FormatOption> optionList = [];
             if (setTargetLanguage) optionList.Add(targetLanguageOption);
@@ -237,7 +249,7 @@ private async Task<bool> ConfigureOptionsAsync(FormatReadOptions options)
     }
 }
 
-file record CsvRecordFormat
+file sealed record CsvRecordFormat
 {
     [Name("id")] public string Id { get; init; } = string.Empty;