diff --git a/docs/INSTALL-ubuntu.md b/docs/INSTALL-ubuntu.md
index 46047beb0..6dd648644 100644
--- a/docs/INSTALL-ubuntu.md
+++ b/docs/INSTALL-ubuntu.md
@@ -199,8 +199,8 @@ Initialize the database:
     # The database name here should match the production one in database.yml
     cd /var/www/discourse
     createdb discourse_prod
-    RUBY_GC_MALLOC_LIMIT=90000000 RAILS_ENV=production rake db:migrate
-    RUBY_GC_MALLOC_LIMIT=90000000 RAILS_ENV=production rake assets:precompile
+    RUBY_GC_MALLOC_LIMIT=90000000 RAILS_ENV=production bundle exec rake db:migrate
+    RUBY_GC_MALLOC_LIMIT=90000000 RAILS_ENV=production bundle exec rake assets:precompile
 
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@@ -334,8 +334,8 @@ The corresponding site setting is:
     # "Check sample configuration files for new settings"
     #
     bundle install --without test --deployment
-    RUBY_GC_MALLOC_LIMIT=90000000 RAILS_ENV=production rake db:migrate
-    RUBY_GC_MALLOC_LIMIT=90000000 RAILS_ENV=production rake assets:precompile
+    RUBY_GC_MALLOC_LIMIT=90000000 RAILS_ENV=production bundle exec rake db:migrate
+    RUBY_GC_MALLOC_LIMIT=90000000 RAILS_ENV=production bundle exec rake assets:precompile
     # restart bluepill
     crontab -l
     # Here, run the command to start bluepill.