diff --git a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java
index d575548..6ba6703 100644
--- a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java
+++ b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java
@@ -91,7 +91,12 @@ public class Axel {
 						form+=command.charAt(i);
 					}
 				}
-				spr.put(cell, form);
+				if((spr.getRow(cell)+1)<=spr.cells.length&&(spr.getCol(cell)+1)<=spr.cells[0].length) {
+					spr.put(cell, form);
+                }
+                else {
+                    System.err.println("Zelle '"+ cell+ "' existiert nicht!");
+                }
             }else if(command.matches("stop")){
             	break;
             }else if(command.startsWith("save")){