diff --git a/IPython/core/display.py b/IPython/core/display.py
index f728f75..c44f3d0 100644
--- a/IPython/core/display.py
+++ b/IPython/core/display.py
@@ -407,9 +407,7 @@ class Javascript(DisplayObject):
         for l in self.lib:
             r += lib_t1 % l
         r += self.data
-        if self.lib:
-            for i in range(len(self.lib)):
-                r+= lib_t2
+        r += lib_t2*len(self.lib)
         return r