diff --git a/src/blocks/scratch3_sensing.js b/src/blocks/scratch3_sensing.js
index b62d09e1f..be83d99c2 100644
--- a/src/blocks/scratch3_sensing.js
+++ b/src/blocks/scratch3_sensing.js
@@ -116,7 +116,7 @@ Scratch3SensingBlocks.prototype.getKeyPressed = function (args, util) {
 
 Scratch3SensingBlocks.prototype.daysSince2000 = function () {
     var msPerDay = 24 * 60 * 60 * 1000;
-    var start = new Date(2000, 1-1, 1);
+    var start = new Date(2000, 1 - 1, 1);
     var today = new Date();
     var dstAdjust = today.getTimezoneOffset() - start.getTimezoneOffset();
     var mSecsSinceStart = today.valueOf() - start.valueOf();
diff --git a/src/engine/blocks.js b/src/engine/blocks.js
index 736d1778e..84d09a6f9 100644
--- a/src/engine/blocks.js
+++ b/src/engine/blocks.js
@@ -399,7 +399,7 @@ Blocks.prototype.blockToXML = function (blockId) {
     // Encode properties of this block.
     var tagName = (block.shadow) ? 'shadow' : 'block';
     var xy = (block.topLevel) ?
-        ' x="' + block.x +'" y="' + block.y +'"' :
+        ' x="' + block.x + '" y="' + block.y + '"' :
         '';
     var xmlString = '';
     xmlString += '<' + tagName +