diff --git a/common/Charts/DrawingObjects.js b/common/Charts/DrawingObjects.js
index bfb3a2e809..6fdc4486b7 100644
--- a/common/Charts/DrawingObjects.js
+++ b/common/Charts/DrawingObjects.js
@@ -1608,6 +1608,8 @@ function DrawingObjects() {
 			printPagesData
 		}
          *****************************************/
+        if (!worksheet || !worksheet.model)
+            return;
 
         // Undo/Redo
         if ( (worksheet.model.index != api.wb.model.getActive()) && !printOptions )
diff --git a/common/Drawings/Format/GraphicFrame.js b/common/Drawings/Format/GraphicFrame.js
index 97b0007931..e4ceeb0842 100644
--- a/common/Drawings/Format/GraphicFrame.js
+++ b/common/Drawings/Format/GraphicFrame.js
@@ -181,6 +181,7 @@ CGraphicFrame.prototype.setGraphicObject= function(graphicObject)
         if(this.graphicObject)
         {
             this.graphicObject.Index = 0;
+            this.graphicObject.Parent = this;
         }
 };
 
@@ -1093,6 +1094,7 @@ CGraphicFrame.prototype.Undo = function(data)
                 if(this.graphicObject)
                 {
                     this.graphicObject.Index = 0;
+                    this.graphicObject.Parent = this;
                 }
                 break;
             }
@@ -1139,6 +1141,7 @@ CGraphicFrame.prototype.Redo = function(data)
                 if(this.graphicObject)
                 {
                     this.graphicObject.Index = 0;
+                    this.graphicObject.Parent = this;
                 }
                 break;
             }
@@ -1213,6 +1216,7 @@ CGraphicFrame.prototype.Load_Changes = function(r)
                 if(this.graphicObject)
                 {
                     this.graphicObject.Index = 0;
+                    this.graphicObject.Parent = this;
                 }
                 break;
             }