1 files changed, 6 insertions, 18 deletions
diff --git a/activesupport/lib/active_support/core_ext/module/qualified_const.rb b/activesupport/lib/active_support/core_ext/module/qualified_const.rb
index d1a0ee2f83..8adf050b6b 100644
--- a/activesupport/lib/active_support/core_ext/module/qualified_const.rb
+++ b/activesupport/lib/active_support/core_ext/module/qualified_const.rb
@@ -23,26 +23,14 @@ end
 # Object.const_get("::String") raises NameError and so does qualified_const_get.
 #++
 class Module
-  if method(:const_defined?).arity == 1
-    def qualified_const_defined?(path)
-      QualifiedConstUtils.raise_if_absolute(path)
-
-      QualifiedConstUtils.names(path).inject(self) do |mod, name|
-        return unless mod.const_defined?(name)
-        mod.const_get(name)
-      end
-      return true
-    end
-  else
-    def qualified_const_defined?(path, search_parents=true)
-      QualifiedConstUtils.raise_if_absolute(path)
+  def qualified_const_defined?(path, search_parents=true)
+    QualifiedConstUtils.raise_if_absolute(path)
 
-      QualifiedConstUtils.names(path).inject(self) do |mod, name|
-        return unless mod.const_defined?(name, search_parents)
-        mod.const_get(name)
-      end
-      return true
+    QualifiedConstUtils.names(path).inject(self) do |mod, name|
+      return unless mod.const_defined?(name, search_parents)
+      mod.const_get(name)
     end
+    return true
   end
 
   def qualified_const_get(path)