diff --git a/ClosedXML/Excel/Columns/XLColumn.cs b/ClosedXML/Excel/Columns/XLColumn.cs
index f106457..ff70d31 100644
--- a/ClosedXML/Excel/Columns/XLColumn.cs
+++ b/ClosedXML/Excel/Columns/XLColumn.cs
@@ -774,12 +774,12 @@
 
         #endregion
 
-        public new Boolean IsEmpty()
+        public override Boolean IsEmpty()
         {
             return IsEmpty(false);
         }
 
-        public new Boolean IsEmpty(Boolean includeFormats)
+        public override Boolean IsEmpty(Boolean includeFormats)
         {
             if (includeFormats && !Style.Equals(Worksheet.Style))
                 return false;
@@ -787,12 +787,12 @@
             return base.IsEmpty(includeFormats);
         }
 
-        public Boolean IsEntireRow()
+        public override Boolean IsEntireRow()
         {
             return false;
         }
 
-        public Boolean IsEntireColumn()
+        public override Boolean IsEntireColumn()
         {
             return true;
         }
diff --git a/ClosedXML/Excel/Ranges/XLRangeBase.cs b/ClosedXML/Excel/Ranges/XLRangeBase.cs
index b08cda8..0534107 100644
--- a/ClosedXML/Excel/Ranges/XLRangeBase.cs
+++ b/ClosedXML/Excel/Ranges/XLRangeBase.cs
@@ -506,24 +506,24 @@
             return Cells().Any(c => c.IsMerged());
         }
 
-        public Boolean IsEmpty()
+        public virtual Boolean IsEmpty()
         {
             return !CellsUsed().Any() || CellsUsed().Any(c => c.IsEmpty());
         }
 
-        public Boolean IsEmpty(Boolean includeFormats)
+        public virtual Boolean IsEmpty(Boolean includeFormats)
         {
             return !CellsUsed(includeFormats).Cast<XLCell>().Any() ||
                    CellsUsed(includeFormats).Cast<XLCell>().Any(c => c.IsEmpty(includeFormats));
         }
 
-        public Boolean IsEntireRow()
+        public virtual Boolean IsEntireRow()
         {
             return RangeAddress.FirstAddress.ColumnNumber == 1
                    && RangeAddress.LastAddress.ColumnNumber == XLHelper.MaxColumnNumber;
         }
 
-        public Boolean IsEntireColumn()
+        public virtual Boolean IsEntireColumn()
         {
             return RangeAddress.FirstAddress.RowNumber == 1
                    && RangeAddress.LastAddress.RowNumber == XLHelper.MaxRowNumber;
diff --git a/ClosedXML/Excel/Rows/XLRow.cs b/ClosedXML/Excel/Rows/XLRow.cs
index 721e29e..a847178 100644
--- a/ClosedXML/Excel/Rows/XLRow.cs
+++ b/ClosedXML/Excel/Rows/XLRow.cs
@@ -709,12 +709,12 @@
 
         #endregion XLRow Below
 
-        public new Boolean IsEmpty()
+        public override Boolean IsEmpty()
         {
             return IsEmpty(false);
         }
 
-        public new Boolean IsEmpty(Boolean includeFormats)
+        public override Boolean IsEmpty(Boolean includeFormats)
         {
             if (includeFormats && !Style.Equals(Worksheet.Style))
                 return false;
@@ -722,12 +722,12 @@
             return base.IsEmpty(includeFormats);
         }
 
-        public Boolean IsEntireRow()
+        public override Boolean IsEntireRow()
         {
             return true;
         }
 
-        public Boolean IsEntireColumn()
+        public override Boolean IsEntireColumn()
         {
             return false;
         }
diff --git a/ClosedXML/Excel/XLWorksheet.cs b/ClosedXML/Excel/XLWorksheet.cs
index d0b30b0..d2e4bc0 100644
--- a/ClosedXML/Excel/XLWorksheet.cs
+++ b/ClosedXML/Excel/XLWorksheet.cs
@@ -1581,12 +1581,12 @@
         {
             return Pictures.Add(imageFile, name);
         }
-        public Boolean IsEntireRow()
+        public override Boolean IsEntireRow()
         {
             return true;
         }
 
-        public Boolean IsEntireColumn()
+        public override Boolean IsEntireColumn()
         {
             return true;
         }