diff --git a/Gulpfile.js b/Gulpfile.js
index fb0d440..8ced66d 100644
--- a/Gulpfile.js
+++ b/Gulpfile.js
@@ -192,8 +192,11 @@ var build = function(options) {
                     file.contents = res;
                     next(null, file);
                 });
-        }))
-        .pipe(preprocess({ context: { DEBUG: false } }));
+        }));
+
+    if (options.version !== 'dev') {
+        compiled.pipe(preprocess({ context: { DEBUG: false } }));
+    }
 
     var build = compiled.pipe(clone())
         .pipe(header(banner + '\n' + license + '\n\n', { context: options }))
diff --git a/package.json b/package.json
index af441bb..ea181e0 100644
--- a/package.json
+++ b/package.json
@@ -49,8 +49,7 @@
     "yuidocjs": "^0.9.0"
   },
   "scripts": {
-    "dev": "npm install && gulp",
-    "test": "gulp test"
+    "test": "gulp && gulp test"
   },
   "dependencies": {}
 }