diff --git a/rakefiles/assets.rake b/rakefiles/assets.rake
index aca6ea2e52..45a7de1102 100644
--- a/rakefiles/assets.rake
+++ b/rakefiles/assets.rake
@@ -147,7 +147,7 @@ end
         # env arguments to be passed to all dependent tasks.
         desc "Compile coffeescript and sass, and then run collectstatic in the specified environment"
         task "#{system}:gather_assets:#{env}" do
-          task(:gather_assets).invoke(system, env)
+          Rake::Task[:gather_assets].invoke(system, env)
         end
     end
 end
diff --git a/rakefiles/django.rake b/rakefiles/django.rake
index 910d4e39cc..b1adf24050 100644
--- a/rakefiles/django.rake
+++ b/rakefiles/django.rake
@@ -30,7 +30,7 @@ end
         desc
     task system, [:env, :options] do |t, args|
         args.with_defaults(:env => 'dev', :options => default_options[system])
-        task(:runserver).invoke(system, args.env, args.options)
+        Rake::Task[:runserver].invoke(system, args.env, args.options)
     end
 
     desc "Start #{system} Celery worker"
diff --git a/rakefiles/jasmine.rake b/rakefiles/jasmine.rake
index ecf88eb4e5..bd1c7e5d6c 100644
--- a/rakefiles/jasmine.rake
+++ b/rakefiles/jasmine.rake
@@ -104,12 +104,12 @@ end
 [:lms, :cms].each do |system|
     desc "Open jasmine tests for #{system} in your default browser"
     task "browse_jasmine_#{system}" do
-        task(:browse_jasmine).invoke(system, 'jasmine')
+        Rake::Task[:browse_jasmine].invoke(system, 'jasmine')
     end
 
     desc "Use phantomjs to run jasmine tests for #{system} from the console"
     task "phantomjs_jasmine_#{system}" do
-        task(:phantomjs_jasmine).invoke(system, 'jasmine')
+        Rake::Task[:phantomjs_jasmine].invoke(system, 'jasmine')
     end
 end