diff --git a/javascript/ImageEditor/ImageHistory.js b/javascript/ImageEditor/ImageHistory.js
index d4b563fd..f8a94600 100644
--- a/javascript/ImageEditor/ImageHistory.js
+++ b/javascript/ImageEditor/ImageHistory.js
@@ -19,6 +19,7 @@ ImageHistory = {
 		this.operationMade = ImageHistory.operationMade.bind(this);		
 		this.isInHistory = ImageHistory.isInHistory.bind(this);
 		this.onImageLoad = ImageHistory.onImageLoad.bind(this);
+		this.removeLastOperation = ImageHistory.removeLastOperation.bind(this);
 	
 		this.enable = ImageHistory.enable.bind(this);
 		this.disable = ImageHistory.disable.bind(this);
@@ -61,6 +62,8 @@ ImageHistory = {
 			this.historyPointer++;
 			this.size[this.historyPointer] = {'width': imageWidth,'height': imageHeight};
 			this.history[this.historyPointer] = {'operation': operation,'fileUrl' : url};
+			this.size = this.size.slice(0,this.historyPointer+1);
+			this.history = this.history.slice(0,this.historyPointer+1);
 			if(operation == 'rotate' || operation == 'crop') this.modifiedOriginalImage = true;
 		}
 	},
@@ -100,6 +103,12 @@ ImageHistory = {
 	   this.size = new Array();
 	},
 	
+	removeLastOperation: function() {
+		this.history.pop();
+		this.size.pop();
+		this.historyPointer--;		
+	},
+	
 	isInHistory: function(operation,url) {
 		if(operation == 'initialize' && this.historyPointer != -1) return true;
 		for(var k=0;k<this.history.length;k++) {