diff --git a/lib/kitchen/driver/dokken.rb b/lib/kitchen/driver/dokken.rb
index e956de3..bafdb69 100644
--- a/lib/kitchen/driver/dokken.rb
+++ b/lib/kitchen/driver/dokken.rb
@@ -495,7 +495,8 @@ def docker_creds_for_image(image)
           c = docker_config_creds[image_registry]
           c.respond_to?(:call) ? c.call : c
         elsif docker_config_creds.key?(default_registry)
-          docker_config_creds[default_registry]
+          c = docker_config_creds[default_registry]
+          c.respond_to?(:call) ? c.call : c
         end
       end