diff --git a/lib/jasmine-rails.rb b/lib/jasmine-rails.rb
index e603653..0622d0a 100644
--- a/lib/jasmine-rails.rb
+++ b/lib/jasmine-rails.rb
@@ -23,7 +23,7 @@ def route_path
 
     def spec_dir
       paths = jasmine_config['spec_dir'] || 'spec/javascripts'
-      [paths].flatten.map { |path| Dir.glob path }.flatten.collect { |path| Rails.root.join(path) }
+      [paths].flatten.map { |path| Dir.glob(Rails.root.join(path)) }.flatten.collect { |path| Rails.root.join(path) }
     end
 
     def include_dir