diff --git a/src/spectator/nested_example_group.cr b/src/spectator/nested_example_group.cr
index 156708f..5f61476 100644
--- a/src/spectator/nested_example_group.cr
+++ b/src/spectator/nested_example_group.cr
@@ -4,53 +4,40 @@ module Spectator
   class NestedExampleGroup < ExampleGroup
     getter what : String
 
-    getter! parent : ExampleGroup
+    getter parent : ExampleGroup
 
     def initialize(@what, @parent, hooks : ExampleHooks)
       super(hooks)
     end
 
     def run_before_all_hooks : Nil
-      if (parent = @parent)
-        parent.run_before_all_hooks
-      end
+      parent.run_before_all_hooks
       super
     end
 
     def run_before_each_hooks : Nil
-      if (parent = @parent)
-        parent.run_before_each_hooks
-      end
+      parent.run_before_each_hooks
       super
     end
 
     def run_after_all_hooks : Nil
       super
-      if (parent = @parent)
-        parent.run_after_all_hooks
-      end
+      parent.run_after_all_hooks
     end
 
     def run_after_each_hooks : Nil
       super
-      if (parent = @parent)
-        parent.run_after_each_hooks
-      end
+      parent.run_after_each_hooks
     end
 
     def wrap_around_each_hooks(&block : ->) : ->
-      super(&block).tap do |wrapper|
-        if (parent = @parent)
-          wrapper = parent.wrap_around_each_hooks(&wrapper)
-        end
-      end
+      wrapper = super(&block)
+      parent.wrap_around_each_hooks(&wrapper)
     end
 
     def to_s(io)
-      if (parent = @parent)
-        parent.to_s(io)
-        io << ' '
-      end
+      parent.to_s(io)
+      io << ' '
       io << what
     end
   end