1 files changed, 3 insertions, 2 deletions
diff --git a/lib/configuration.js b/lib/configuration.js
index 3b6b47b..7488fae 100644
--- a/lib/configuration.js
+++ b/lib/configuration.js
@@ -1,5 +1,6 @@
 var _ = require('lodash');
 var Q = require('q');
+var fs = require('fs');
 var path = require('path');
 var semver = require('semver');
 
@@ -284,10 +285,10 @@ Configuration.DEFAULT = {
         },
 
         // Header HTML template. Available variables: _PAGENUM_, _TITLE_, _AUTHOR_ and _SECTION_.
-        'headerTemplate': '',
+        'headerTemplate': null,
 
         // Footer HTML template. Available variables: _PAGENUM_, _TITLE_, _AUTHOR_ and _SECTION_.
-        'footerTemplate': ''
+        'footerTemplate': null
     }
 };