diff --git a/src/ExcelDataReader.DataSet/ExcelDataReaderExtensions.cs b/src/ExcelDataReader.DataSet/ExcelDataReaderExtensions.cs
index 1598420d..b2eaab3f 100644
--- a/src/ExcelDataReader.DataSet/ExcelDataReaderExtensions.cs
+++ b/src/ExcelDataReader.DataSet/ExcelDataReaderExtensions.cs
@@ -68,7 +68,7 @@ private static string GetUniqueColumnName(DataTable table, string name)
 
     private static DataTable AsDataTable(IExcelDataReader self, ExcelDataTableConfiguration configuration)
     {
-        var result = new DataTable { TableName = self.Name };
+        var result = new DataTable { TableName = self.Name, CaseSensitive = configuration.CaseSentitive };
         result.ExtendedProperties.Add("visiblestate", self.VisibleState);
         var first = true;
         var emptyRows = 0;
diff --git a/src/ExcelDataReader.DataSet/ExcelDataTableConfiguration.cs b/src/ExcelDataReader.DataSet/ExcelDataTableConfiguration.cs
index 04243d4f..f9880646 100644
--- a/src/ExcelDataReader.DataSet/ExcelDataTableConfiguration.cs
+++ b/src/ExcelDataReader.DataSet/ExcelDataTableConfiguration.cs
@@ -5,6 +5,11 @@ namespace ExcelDataReader;
 /// </summary>
 public class ExcelDataTableConfiguration
 {
+    /// <summary>
+    /// Gets or sets a value indicating whether the DataTable should be case sensitive. Useful when setting a primary key after loading from Excel.
+    /// </summary>
+    public bool CaseSentitive { get; set; }
+
     /// <summary>
     /// Gets or sets a value indicating the prefix of generated column names.
     /// </summary>