diff --git a/ClosedXML/Excel/Cells/XLCell.cs b/ClosedXML/Excel/Cells/XLCell.cs
index 3ae83b6..ca7c91d 100644
--- a/ClosedXML/Excel/Cells/XLCell.cs
+++ b/ClosedXML/Excel/Cells/XLCell.cs
@@ -223,7 +223,7 @@
 
             // For SetValue<T> we set the cell value directly to the parameter
             // as opposed to the other SetValue(object value) where we parse the string and try to decude the value
-            if (value is String || value is char)
+            if (value is String || value is char || value is Guid)
             {
                 parsedValue = value.ToInvariantString();
                 _dataType = XLDataType.Text;
diff --git a/ClosedXML_Tests/Excel/Cells/XLCellTests.cs b/ClosedXML_Tests/Excel/Cells/XLCellTests.cs
index 311659b..410e744 100644
--- a/ClosedXML_Tests/Excel/Cells/XLCellTests.cs
+++ b/ClosedXML_Tests/Excel/Cells/XLCellTests.cs
@@ -109,6 +109,16 @@
         }
 
         [Test]
+        public void InsertData_with_Guids()
+        {
+            var ws = new XLWorkbook().Worksheets.Add("Sheet1");
+            ws.FirstCell().InsertData(Enumerable.Range(1, 20).Select(i => new { Guid = Guid.NewGuid() }));
+
+            Assert.AreEqual(XLDataType.Text, ws.FirstCell().DataType);
+            Assert.AreEqual(Guid.NewGuid().ToString().Length, ws.FirstCell().GetString().Length);
+        }
+
+        [Test]
         public void IsEmpty1()
         {
             IXLWorksheet ws = new XLWorkbook().Worksheets.Add("Sheet1");
@@ -340,6 +350,23 @@
         }
 
         [Test]
+        public void SetCellValueToGuid()
+        {
+            var ws = new XLWorkbook().AddWorksheet("Sheet1");
+            var guid = Guid.NewGuid();
+            ws.FirstCell().Value = guid;
+            Assert.AreEqual(XLDataType.Text, ws.FirstCell().DataType);
+            Assert.AreEqual(guid.ToString(), ws.FirstCell().Value);
+            Assert.AreEqual(guid.ToString(), ws.FirstCell().GetString());
+
+            guid = Guid.NewGuid();
+            ws.FirstCell().SetValue(guid);
+            Assert.AreEqual(XLDataType.Text, ws.FirstCell().DataType);
+            Assert.AreEqual(guid.ToString(), ws.FirstCell().Value);
+            Assert.AreEqual(guid.ToString(), ws.FirstCell().GetString());
+        }
+
+        [Test]
         public void ValueSetToEmptyString()
         {
             string expected = String.Empty;