diff --git a/ClosedXML/Excel/XLWorksheets.cs b/ClosedXML/Excel/XLWorksheets.cs
index e3f42b7..9061e1d 100644
--- a/ClosedXML/Excel/XLWorksheets.cs
+++ b/ClosedXML/Excel/XLWorksheets.cs
@@ -180,7 +180,8 @@
         {
             if (String.IsNullOrWhiteSpace(oldSheetName) || !_worksheets.ContainsKey(oldSheetName)) return;
 
-            if (_worksheets.Any(ws1 => ws1.Key.Equals(newSheetName, StringComparison.OrdinalIgnoreCase)))
+            if (!oldSheetName.Equals(newSheetName, StringComparison.OrdinalIgnoreCase)
+                && _worksheets.Any(ws1 => ws1.Key.Equals(newSheetName, StringComparison.OrdinalIgnoreCase)))
                 throw new ArgumentException(String.Format("A worksheet with the same name ({0}) has already been added.", newSheetName), nameof(newSheetName));
 
             var ws = _worksheets[oldSheetName];
diff --git a/ClosedXML_Tests/Excel/Worksheets/XLWorksheetTests.cs b/ClosedXML_Tests/Excel/Worksheets/XLWorksheetTests.cs
index f679187..0918e5a 100644
--- a/ClosedXML_Tests/Excel/Worksheets/XLWorksheetTests.cs
+++ b/ClosedXML_Tests/Excel/Worksheets/XLWorksheetTests.cs
@@ -140,5 +140,25 @@
                 Assert.AreEqual(6, value);
             }
         }
+
+        [Test]
+        public void CanRenameWorksheet()
+        {
+            using (var wb = new XLWorkbook())
+            {
+                var ws1 = wb.AddWorksheet("Sheet1");
+                var ws2 = wb.AddWorksheet("Sheet2");
+
+                ws1.Name = "New sheet name";
+                Assert.AreEqual("New sheet name", ws1.Name);
+
+                ws2.Name = "sheet2";
+                Assert.AreEqual("sheet2", ws2.Name);
+
+                Assert.Throws<ArgumentException>(() => ws1.Name = "SHEET2");
+
+
+            }
+        }
     }
-}
\ No newline at end of file
+}