diff --git a/ClosedXML_Tests/Excel/Columns/ColumnTests.cs b/ClosedXML_Tests/Excel/Columns/ColumnTests.cs
index 0a98c4f..aa28593 100644
--- a/ClosedXML_Tests/Excel/Columns/ColumnTests.cs
+++ b/ClosedXML_Tests/Excel/Columns/ColumnTests.cs
@@ -108,7 +108,7 @@
 
             IXLColumn columnIns = ws.Column(2).InsertColumnsBefore(1).First();
             string outputPath = Path.Combine(TestHelper.TestsOutputDirectory, @"ForTesting\Sandbox.xlsx");
-            wb.SaveAs(outputPath);
+            wb.SaveAs(outputPath, true);
 
             Assert.AreEqual(XLColor.Red, ws.Column(1).Cell(1).Style.Fill.BackgroundColor);
             Assert.AreEqual(XLColor.Red, ws.Column(1).Cell(2).Style.Fill.BackgroundColor);
@@ -237,4 +237,4 @@
             Assert.AreEqual(2, lastCoUsed);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/ClosedXML_Tests/Excel/PageSetup/HeaderFooterTests.cs b/ClosedXML_Tests/Excel/PageSetup/HeaderFooterTests.cs
index d1748a9..18fe221 100644
--- a/ClosedXML_Tests/Excel/PageSetup/HeaderFooterTests.cs
+++ b/ClosedXML_Tests/Excel/PageSetup/HeaderFooterTests.cs
@@ -17,7 +17,7 @@
             ws.PageSetup.Header.Center.AddText("Initial page header", XLHFOccurrence.EvenPages);
 
             var ms = new MemoryStream();
-            wb.SaveAs(ms);
+            wb.SaveAs(ms, true);
 
             wb = new XLWorkbook(ms);
             ws = wb.Worksheets.First();
@@ -25,7 +25,7 @@
             ws.PageSetup.Header.Center.Clear();
             ws.PageSetup.Header.Center.AddText("Changed header", XLHFOccurrence.EvenPages);
 
-            wb.SaveAs(ms);
+            wb.SaveAs(ms, true);
 
             wb = new XLWorkbook(ms);
             ws = wb.Worksheets.First();
@@ -34,4 +34,4 @@
             Assert.AreEqual("Changed header", newHeader);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/ClosedXML_Tests/Excel/Ranges/XLRangeBaseTests.cs b/ClosedXML_Tests/Excel/Ranges/XLRangeBaseTests.cs
index c90f624..22bd7c6 100644
--- a/ClosedXML_Tests/Excel/Ranges/XLRangeBaseTests.cs
+++ b/ClosedXML_Tests/Excel/Ranges/XLRangeBaseTests.cs
@@ -178,7 +178,7 @@
         //    ws.NamedRanges.Add("TestRange", "\"Hello\"");
         //    using (MemoryStream memoryStream = new MemoryStream())
         //    {
-        //        wb.SaveAs(memoryStream);
+        //        wb.SaveAs(memoryStream, true);
         //        var wb2 = new XLWorkbook(memoryStream);
         //        var text = wb2.Worksheet("Sheet1").NamedRanges.First()
         //        memoryStream.Close();
@@ -187,4 +187,4 @@
 
         //}
     }
-}
\ No newline at end of file
+}
diff --git a/ClosedXML_Tests/Excel/Tables/TablesTests.cs b/ClosedXML_Tests/Excel/Tables/TablesTests.cs
index 7ebf9bc..c5c392b 100644
--- a/ClosedXML_Tests/Excel/Tables/TablesTests.cs
+++ b/ClosedXML_Tests/Excel/Tables/TablesTests.cs
@@ -31,7 +31,7 @@
             wb.AddWorksheet(dt);
 
             using (var ms = new MemoryStream())
-                wb.SaveAs(ms);
+                wb.SaveAs(ms, true);
         }
 
         [Test]
@@ -43,7 +43,7 @@
             ws.Range("A1").CreateTable();
 
             using (var ms = new MemoryStream())
-                wb.SaveAs(ms);
+                wb.SaveAs(ms, true);
         }
 
         [Test]
@@ -85,7 +85,7 @@
             ws.RangeUsed().CreateTable();
             using (var ms = new MemoryStream())
             {
-                wb.SaveAs(ms);
+                wb.SaveAs(ms, true);
                 var wb2 = new XLWorkbook(ms);
                 IXLWorksheet ws2 = wb2.Worksheet(1);
                 IXLTable table2 = ws2.Table(0);
@@ -115,7 +115,7 @@
 
             using (var ms = new MemoryStream())
             {
-                wb.SaveAs(ms);
+                wb.SaveAs(ms, true);
                 var wb2 = new XLWorkbook(ms);
                 IXLWorksheet ws2 = wb2.Worksheet(1);
                 IXLTable table2 = ws2.Table(0);
@@ -177,13 +177,9 @@
             row = table.DataRange.InsertRowsAbove(1).First();
             row.Field("Value").Value = 1;
 
-            //wb.SaveAs(@"D:\Excel Files\ForTesting\Sandbox.xlsx");
-
             Assert.AreEqual(1, ws.Cell(2, 1).GetDouble());
             Assert.AreEqual(2, ws.Cell(3, 1).GetDouble());
             Assert.AreEqual(3, ws.Cell(4, 1).GetDouble());
-
-            //wb.SaveAs(@"D:\Excel Files\ForTesting\Sandbox.xlsx");
         }
 
         [Test]
@@ -196,20 +192,17 @@
             IXLTable table = ws.Range("A1:A2").CreateTable();
             table.SetShowTotalsRow()
                 .Field(0).TotalsRowFunction = XLTotalsRowFunction.Sum;
-            //wb.SaveAs(@"D:\Excel Files\ForTesting\Sandbox1.xlsx");
+
             IXLTableRow row = table.DataRange.FirstRow();
             row.Field("Value").Value = 3;
             row = row.InsertRowsAbove(1).First();
             row.Field("Value").Value = 2;
             row = row.InsertRowsAbove(1).First();
             row.Field("Value").Value = 1;
-            //wb.SaveAs(@"D:\Excel Files\ForTesting\Sandbox2.xlsx");
 
             Assert.AreEqual(1, ws.Cell(2, 1).GetDouble());
             Assert.AreEqual(2, ws.Cell(3, 1).GetDouble());
             Assert.AreEqual(3, ws.Cell(4, 1).GetDouble());
-
-            //wb.SaveAs(@"D:\Excel Files\ForTesting\Sandbox.xlsx");
         }
 
         [Test]
@@ -230,8 +223,6 @@
             row = table.DataRange.InsertRowsBelow(1).First();
             row.Field("Value").Value = 3;
 
-            //wb.SaveAs(@"D:\Excel Files\ForTesting\Sandbox.xlsx");
-
             Assert.AreEqual(1, ws.Cell(2, 1).GetDouble());
             Assert.AreEqual(2, ws.Cell(3, 1).GetDouble());
             Assert.AreEqual(3, ws.Cell(4, 1).GetDouble());
@@ -258,8 +249,6 @@
             Assert.AreEqual(1, ws.Cell(2, 1).GetDouble());
             Assert.AreEqual(2, ws.Cell(3, 1).GetDouble());
             Assert.AreEqual(3, ws.Cell(4, 1).GetDouble());
-
-            //wb.SaveAs(@"D:\Excel Files\ForTesting\Sandbox.xlsx");
         }
 
         [Test]
@@ -276,8 +265,6 @@
 
             IXLTable table = ws.Tables.First();
 
-            //wb.SaveAs(@"D:\Excel Files\ForTesting\Sandbox1.xlsx");
-
             Assert.IsTrue(ws.Cell(1, 1).IsEmpty(true));
             Assert.AreEqual(null, table.HeadersRow());
             Assert.AreEqual("A", table.DataRange.FirstRow().Field("Categories").GetString());
@@ -296,9 +283,6 @@
             ws.FirstCell().SetValue("x");
 
             table.SetShowHeaderRow();
-            //wb.SaveAs(@"D:\Excel Files\ForTesting\Sandbox2.xlsx");
-
-            //wb.SaveAs(@"D:\Excel Files\ForTesting\Sandbox3.xlsx");
 
             Assert.AreEqual("x", ws.FirstCell().GetString());
             Assert.AreEqual("Categories", ws.Cell("A2").GetString());
@@ -333,4 +317,4 @@
             Assert.AreEqual("LastName", cellValue);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/ClosedXML_Tests/TestHelper.cs b/ClosedXML_Tests/TestHelper.cs
index be509a2..07576df 100644
--- a/ClosedXML_Tests/TestHelper.cs
+++ b/ClosedXML_Tests/TestHelper.cs
@@ -19,22 +19,22 @@
         //Note: Run example tests parameters
         public static string TestsOutputDirectory
         {
-            get { 
-                return Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location); 
+            get {
+                return Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
             }
 
         }
 
         public const string ActualTestResultPostFix = "";
         public static readonly string TestsExampleOutputDirectory = Path.Combine(TestsOutputDirectory, "Examples");
-        
+
         private const bool CompareWithResources = true;
 
         private static readonly ResourceFileExtractor _extractor = new ResourceFileExtractor(null, ".Resource.Examples.");
 
         public static void SaveWorkbook(XLWorkbook workbook, string fileName)
         {
-            workbook.SaveAs(Path.Combine(TestsOutputDirectory, fileName));
+            workbook.SaveAs(Path.Combine(TestsOutputDirectory, fileName), true);
         }
 
         public static void RunTestExample<T>(string filePartName)
@@ -57,7 +57,7 @@
             var filePath2 = Path.Combine(directory, fileName);
             //Run test
             example.Create(filePath1);
-            new XLWorkbook(filePath1).SaveAs(filePath2);
+            new XLWorkbook(filePath1).SaveAs(filePath2, true);
             bool success = true;
 #pragma warning disable 162
             try
@@ -102,4 +102,4 @@
             }
         }
     }
-}
\ No newline at end of file
+}