diff --git a/lib/sidekiq/cli.rb b/lib/sidekiq/cli.rb
index f4b14341..4ae3f604 100644
--- a/lib/sidekiq/cli.rb
+++ b/lib/sidekiq/cli.rb
@@ -326,8 +326,9 @@ module Sidekiq
       end
       ns = opts.delete(:namespace)
       if ns
-        Sidekiq.logger.warn("namespace should be set in your ruby initializer, is ignored in config file")
-        Sidekiq.logger.warn("config.redis = { :url => ..., :namespace => '#{ns}' }")
+        # logger hasn't been initialized yet, puts is all we have.
+        puts("namespace should be set in your ruby initializer, is ignored in config file")
+        puts("config.redis = { :url => ..., :namespace => '#{ns}' }")
       end
       opts
     end
diff --git a/test/config.yml b/test/config.yml
index 2caf26a3..36290592 100644
--- a/test/config.yml
+++ b/test/config.yml
@@ -3,7 +3,6 @@
 :require:      ./test/fake_env.rb
 :pidfile:      /tmp/sidekiq-config-test.pid
 :logfile:      /tmp/sidekiq.log
-:namespace:    sidekiq
 :concurrency:  50
 :queues:
   - [<%="very_"%>often, 2]