diff --git a/sources/scripts/dotgrid.js b/sources/scripts/dotgrid.js
index 8ab3700..9d8f4d2 100644
--- a/sources/scripts/dotgrid.js
+++ b/sources/scripts/dotgrid.js
@@ -98,10 +98,11 @@ function Dotgrid(width,height,grid_x,grid_y,block_x,block_y,thickness = 3,lineca
     var o = e.target.getAttribute("data-operation");
     if(!o){ return; }
 
+    console.log(o)
     if(o == "line"){ this.draw_line(); }
     if(o == "arc_c"){ this.draw_arc("0,1"); }
-    if(o == "arc_r"){ this.draw_line("0,0"); }
-    if(o == "bezier"){ this.draw_line(); }
+    if(o == "arc_r"){ this.draw_arc("0,0"); }
+    if(o == "bezier"){ this.draw_bezier(); }
     if(o == "export"){ this.export(); }
   }
 
diff --git a/sources/scripts/path_arc.js b/sources/scripts/path_arc.js
index cc8c35e..9beb633 100644
--- a/sources/scripts/path_arc.js
+++ b/sources/scripts/path_arc.js
@@ -13,11 +13,15 @@ function Path_Arc(from,to,orientation,end)
       html += "M"+this.from+" ";  
     }
     else if(prev){
-      if(prev.end && !prev.end.is_equal(this.from)){
-        html += "M"+this.from+" "; 
+      if(prev.end){
+        if(!prev.end.is_equal(this.from)){
+          html += "M"+this.from+" ";  
+        }         
       }
-      else if(prev.to && !prev.to.is_equal(this.from)){
-        html += "M"+this.from+" "; 
+      else if(prev.to){
+        if(!prev.to.is_equal(this.from)){
+          html += "M"+this.from+" "; 
+        }
       }
     }
 
diff --git a/sources/scripts/path_bezier.js b/sources/scripts/path_bezier.js
index 2ff383d..ec02cce 100644
--- a/sources/scripts/path_bezier.js
+++ b/sources/scripts/path_bezier.js
@@ -12,11 +12,15 @@ function Path_Bezier(from,to,end)
       html += "M"+this.from+" ";  
     }
     else if(prev){
-      if(prev.end && !prev.end.is_equal(this.from)){
-        html += "M"+this.from+" "; 
+      if(prev.end){
+        if(!prev.end.is_equal(this.from)){
+          html += "M"+this.from+" ";  
+        }         
       }
-      else if(prev.to && !prev.to.is_equal(this.from)){
-        html += "M"+this.from+" "; 
+      else if(prev.to){
+        if(!prev.to.is_equal(this.from)){
+          html += "M"+this.from+" "; 
+        }
       }
     }