diff --git a/lib/forcegraph/draw.js b/lib/forcegraph/draw.js
index b6252e7..3e66442 100644
--- a/lib/forcegraph/draw.js
+++ b/lib/forcegraph/draw.js
@@ -97,6 +97,7 @@ define(['helper'], function (helper) {
       ctx.lineWidth = 2.5;
     }
     ctx.stroke();
+    ctx.globalAlpha = 1;
   };
 
   self.setCTX = function setCTX(newValue) {