diff --git a/src/EPPlus/Core/CellStore/CellStore.cs b/src/EPPlus/Core/CellStore/CellStore.cs
index 1d86c8986..d75c1312c 100644
--- a/src/EPPlus/Core/CellStore/CellStore.cs
+++ b/src/EPPlus/Core/CellStore/CellStore.cs
@@ -62,10 +62,6 @@ public CellStore()
         {
             _columnIndex = new ColumnIndex<T>[CellStoreSettings.ColSizeMin];
         }
-        ~CellStore()
-        {
-            _columnIndex = null;
-        }
         internal bool HasValues
         {
             get
diff --git a/src/EPPlus/Core/CellStore/ColumnIndex.cs b/src/EPPlus/Core/CellStore/ColumnIndex.cs
index 2339a34d7..734fc2915 100644
--- a/src/EPPlus/Core/CellStore/ColumnIndex.cs
+++ b/src/EPPlus/Core/CellStore/ColumnIndex.cs
@@ -27,10 +27,6 @@ public ColumnIndex()
             _pages = new PageIndex[CellStoreSettings.PagesPerColumnMin];
             PageCount = 0;
         }
-        ~ColumnIndex()
-        {
-            _pages = null;
-        }
         internal int GetPagePosition(int Row)
         {
             var page = (Row >> CellStoreSettings._pageBits);
@@ -274,7 +270,11 @@ public void Dispose()
                 (_pages[p] as IDisposable)?.Dispose();
             }
             _pages = null;
-            if (_values != null) _values.Clear();
+            if (_values != null)
+            {
+                _values.Clear();
+                _values = null;
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/src/EPPlus/Core/CellStore/PageIndex.cs b/src/EPPlus/Core/CellStore/PageIndex.cs
index fbbbdca24..4fadaa743 100644
--- a/src/EPPlus/Core/CellStore/PageIndex.cs
+++ b/src/EPPlus/Core/CellStore/PageIndex.cs
@@ -45,10 +45,6 @@ public PageIndex(PageIndex pageItem, int start, int size, short index, int offse
             Index = index;
             Offset = offset;
         }
-        ~PageIndex()
-        {
-            Rows = null;
-        }
         internal int Offset = 0;
         /// <summary>
         /// Rows in the rows collection.