diff --git a/gulp.config.js b/gulp.config.js
index 9b53651..3ac4770 100644
--- a/gulp.config.js
+++ b/gulp.config.js
@@ -15,6 +15,7 @@ module.exports = function() {
         js: base.webroot + "js/**/*.js",
         css : base.webroot + "css/**/*.css",
         lib : base.webroot + "lib/",
+        node_modules : base.node_modules,
         angularWebApi : base.node_modules + "angular2-in-memory-web-api/*.js",
         corejs : base.node_modules + "core-js/client/shim*.js",
         zonejs : base.node_modules + "zone.js/dist/zone*.js",
diff --git a/gulpfile.js b/gulpfile.js
index acd6c21..4cffc23 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -18,43 +18,43 @@ gulp.task("clean", ["clean:js", "clean:css"]);
 gulp.task("copy:angular", function () {
 
     return gulp.src(config.angular,
-        { base: "./node_modules/" + "@angular/" })
+        { base: config.node_modules + "@angular/" })
         .pipe(gulp.dest(config.lib + "@angular/"));
 });
 
 gulp.task("copy:angularWebApi", function () {
     return gulp.src(config.angularWebApi,
-        { base: "./node_modules/" })
+        { base: config.node_modules })
         .pipe(gulp.dest(config.lib));
 });
 
 gulp.task("copy:corejs", function () {
     return gulp.src(config.corejs,
-        { base: "./node_modules/" })
+        { base: config.node_modules })
         .pipe(gulp.dest(config.lib));
 });
 
 gulp.task("copy:zonejs", function () {
     return gulp.src(config.zonejs,
-        { base: "./node_modules/" })
+        { base: config.node_modules })
         .pipe(gulp.dest(config.lib));
 });
 
 gulp.task("copy:reflectjs", function () {
     return gulp.src(config.reflectjs,
-        { base: "./node_modules/" })
+        { base: config.node_modules })
         .pipe(gulp.dest(config.lib));
 });
 
 gulp.task("copy:systemjs", function () {
     return gulp.src(config.systemjs,
-        { base: "./node_modules/" })
+        { base: config.node_modules })
         .pipe(gulp.dest(config.lib));
 });
 
 gulp.task("copy:rxjs", function () {
     return gulp.src(config.rxjs,
-        { base: "./node_modules/" })
+        { base: config.node_modules })
         .pipe(gulp.dest(config.lib));
 });
 
@@ -65,7 +65,7 @@ gulp.task("copy:app", function () {
 
 gulp.task("copy:jasmine", function () {
     return gulp.src(config.jasminejs,
-        { base: "./node_modules/" + "jasmine-core/lib" })
+        { base: config.node_modules + "jasmine-core/lib" })
         .pipe(gulp.dest(config.lib));
 });