diff --git a/sources/scripts/dotgrid.js b/sources/scripts/dotgrid.js
index 9d8f4d2..0a2a88e 100644
--- a/sources/scripts/dotgrid.js
+++ b/sources/scripts/dotgrid.js
@@ -314,8 +314,12 @@ function Dotgrid(width,height,grid_x,grid_y,block_x,block_y,thickness = 3,lineca
 
   this.erase = function()
   {
-    this.reset();
-    this.segments.pop();
+    if(from || to || end){
+      this.reset();
+    }
+    else{
+      this.segments.pop();  
+    }
     this.draw();
   }
 
diff --git a/sources/scripts/path_arc.js b/sources/scripts/path_arc.js
index 9beb633..ee3d71b 100644
--- a/sources/scripts/path_arc.js
+++ b/sources/scripts/path_arc.js
@@ -9,7 +9,7 @@ function Path_Arc(from,to,orientation,end)
   {
     var html = ""
 
-    if(!prev){
+    if(!prev || (!prev.to && !prev.end)){
       html += "M"+this.from+" ";  
     }
     else if(prev){
diff --git a/sources/scripts/path_bezier.js b/sources/scripts/path_bezier.js
index ec02cce..e070884 100644
--- a/sources/scripts/path_bezier.js
+++ b/sources/scripts/path_bezier.js
@@ -8,7 +8,7 @@ function Path_Bezier(from,to,end)
   {
     var html = ""
 
-    if(!prev){
+    if(!prev || (!prev.to && !prev.end)){
       html += "M"+this.from+" ";  
     }
     else if(prev){
diff --git a/sources/scripts/path_line.js b/sources/scripts/path_line.js
index ceee600..3bddef7 100644
--- a/sources/scripts/path_line.js
+++ b/sources/scripts/path_line.js
@@ -8,7 +8,7 @@ function Path_Line(from,to,end = null)
   {
     var html = ""
 
-    if(!prev){
+    if(!prev || (!prev.to && !prev.end)){
       html += "M"+this.from+" ";  
     }
     else if(prev){