diff --git a/main/sc/source/ui/view/formatsh.cxx b/main/sc/source/ui/view/formatsh.cxx
index 1855383..9d756ad 100644
--- a/main/sc/source/ui/view/formatsh.cxx
+++ b/main/sc/source/ui/view/formatsh.cxx
@@ -1105,47 +1105,51 @@ void ScFormatShell::ExecuteNumFormat( SfxRequest& rReq )
 			break;
 
 		case SID_NUMBER_TYPE_FORMAT:
-			{
-				SfxInt16Item aFormatItem((const SfxInt16Item&)rReq.GetArgs()->Get(nSlot));
-				sal_uInt16 nFormat = aFormatItem.GetValue();
-				switch(nFormat)
-				{
-				case 0:
-					pTabViewShell->SetNumberFormat( NUMBERFORMAT_NUMBER); //Modify
-					break;
-				case 1:
-					pTabViewShell->SetNumberFormat( NUMBERFORMAT_NUMBER, 2 ); //Modify
-					break;
-				case 2:
-					pTabViewShell->SetNumberFormat( NUMBERFORMAT_PERCENT );
-					break;
-				case 3:
-					pTabViewShell->SetNumberFormat( NUMBERFORMAT_CURRENCY );
-					break;
-				case 4:
-					pTabViewShell->SetNumberFormat( NUMBERFORMAT_DATE );
-					break;
-				case 5:
-					pTabViewShell->SetNumberFormat( NUMBERFORMAT_TIME );
-					break;
-				case 6:
-					pTabViewShell->SetNumberFormat( NUMBERFORMAT_SCIENTIFIC );
-					break;
-				case 7:
-					pTabViewShell->SetNumberFormat( NUMBERFORMAT_FRACTION );
-					break;
-				case 8:
-					pTabViewShell->SetNumberFormat( NUMBERFORMAT_LOGICAL );
-					break;
-				case 9:
-					pTabViewShell->SetNumberFormat( NUMBERFORMAT_TEXT );
-					break;
-				default:
-					;
-				}	
-				rReq.Done();
-			}
-			break;
+            if ( pReqArgs )
+            {
+                const SfxPoolItem* pItem;
+                if ( pReqArgs->GetItemState( nSlot, sal_True, &pItem ) == SFX_ITEM_SET )
+                {
+                    sal_uInt16 nFormat = ((SfxInt16Item *)pItem)->GetValue();
+                    switch(nFormat)
+                    {
+                    case 0:
+                        pTabViewShell->SetNumberFormat( NUMBERFORMAT_NUMBER); //Modify
+                        break;
+                    case 1:
+                        pTabViewShell->SetNumberFormat( NUMBERFORMAT_NUMBER, 2 ); //Modify
+                        break;
+                    case 2:
+                        pTabViewShell->SetNumberFormat( NUMBERFORMAT_PERCENT );
+                        break;
+                    case 3:
+                        pTabViewShell->SetNumberFormat( NUMBERFORMAT_CURRENCY );
+                        break;
+                    case 4:
+                        pTabViewShell->SetNumberFormat( NUMBERFORMAT_DATE );
+                        break;
+                    case 5:
+                        pTabViewShell->SetNumberFormat( NUMBERFORMAT_TIME );
+                        break;
+                    case 6:
+                        pTabViewShell->SetNumberFormat( NUMBERFORMAT_SCIENTIFIC );
+                        break;
+                    case 7:
+                        pTabViewShell->SetNumberFormat( NUMBERFORMAT_FRACTION );
+                        break;
+                    case 8:
+                        pTabViewShell->SetNumberFormat( NUMBERFORMAT_LOGICAL );
+                        break;
+                    case 9:
+                        pTabViewShell->SetNumberFormat( NUMBERFORMAT_TEXT );
+                        break;
+                    default:
+                        ;
+                    }
+                    rReq.Done();
+                }
+            }
+            break;
 
         default:
 			DBG_ERROR("falscher Slot bei ExecuteEdit");