diff --git a/lib/sidekiq/capsule.rb b/lib/sidekiq/capsule.rb
index c9f96173e..41047d6b1 100644
--- a/lib/sidekiq/capsule.rb
+++ b/lib/sidekiq/capsule.rb
@@ -28,6 +28,7 @@ def initialize(name, config)
       @name = name
       @config = config
       @queues = ["default"]
+      @weights = { "default" => 0 }
       @concurrency = config[:concurrency]
       @mode = :strict
     end
diff --git a/test/capsule_test.rb b/test/capsule_test.rb
index 3db494fd9..b28abcf65 100644
--- a/test/capsule_test.rb
+++ b/test/capsule_test.rb
@@ -43,6 +43,21 @@
     assert_equal %w[foo baz baz baz], cap.queues
   end
 
+  it "parses weights correctly" do
+    cap = @cap
+    assert_equal({ "default" => 0 }, cap.weights)
+
+    cap.queues = %w[foo bar,2]
+    assert_equal({ "foo" => 0, "bar" => 2 }, cap.weights)
+
+    cap.queues = ["default"]
+    assert_equal({ "default" => 0 }, cap.weights)
+
+    # config/sidekiq.yml input will look like this
+    cap.queues = [["foo"], ["baz", 3]]
+    assert_equal({ "foo" => 0, "baz" => 3 }, cap.weights)
+  end
+
   it "can have customized middleware chains" do
     one = Object.new
     two = Object.new