diff --git a/lib/ldclient-rb/ldclient.rb b/lib/ldclient-rb/ldclient.rb
index 7976a61b..6e031aaf 100644
--- a/lib/ldclient-rb/ldclient.rb
+++ b/lib/ldclient-rb/ldclient.rb
@@ -214,6 +214,8 @@ def all_keys
     # Returns all feature flags
     #
     def all_flags
+      return Hash.new if @offline
+
       if @config.stream? && !@stream_processor.started?
         @stream_processor.start
       end