diff --git a/src/spectator/config_builder.cr b/src/spectator/config_builder.cr
index 513858b..8355f15 100644
--- a/src/spectator/config_builder.cr
+++ b/src/spectator/config_builder.cr
@@ -109,7 +109,7 @@ module Spectator
     end
 
     # Creates a configuration.
-    protected def build : Config
+    def build : Config
       Config.new(self)
     end
   end