diff --git a/sources/scripts/dotgrid.js b/sources/scripts/dotgrid.js
index 662acc2..00a0cbc 100644
--- a/sources/scripts/dotgrid.js
+++ b/sources/scripts/dotgrid.js
@@ -193,9 +193,7 @@ function Dotgrid(width,height,grid_x,grid_y,block_x,block_y,thickness = 3,lineca
 
   this.new = function()
   {
-    dotgrid.segments = [];
-    dotgrid.history.push(dotgrid.segments)
-    dotgrid.draw();
+    dotgrid.clear();
   }
 
   this.save = function()
@@ -663,6 +661,7 @@ function Dotgrid(width,height,grid_x,grid_y,block_x,block_y,thickness = 3,lineca
 
   this.clear = function()
   {
+    this.history.clear();
     this.reset();
     this.segments = [];
     this.thickness = 10
diff --git a/sources/scripts/lib/history.js b/sources/scripts/lib/history.js
index 100b1fe..fc290dd 100644
--- a/sources/scripts/lib/history.js
+++ b/sources/scripts/lib/history.js
@@ -3,6 +3,12 @@ function History()
   this.index = 0;
   this.a = [];
 
+  this.clear = function()
+  {
+    this.a = [];
+    this.index = 0;
+  }
+
   this.push = function(data)
   {
     if(this.index < this.a.length-1){
@@ -35,6 +41,6 @@ function History()
     return copy(this.a[this.index]);
   }
 
-  function copy(data){ return data.slice(0); }
+  function copy(data){ return data ? data.slice(0) : []; }
   function clamp(v, min, max) { return v < min ? min : v > max ? max : v; }
 }
\ No newline at end of file