diff --git a/lib/rubocop/cop/rspec/describe_class.rb b/lib/rubocop/cop/rspec/describe_class.rb
index 32e834113..f1f3d49a3 100644
--- a/lib/rubocop/cop/rspec/describe_class.rb
+++ b/lib/rubocop/cop/rspec/describe_class.rb
@@ -27,52 +27,33 @@ class DescribeClass < Base
         MSG = 'The first argument to describe should be '\
               'the class or module being tested.'
 
-        def_node_matcher :valid_describe?, <<-PATTERN
-          {
-            (send #{RSPEC} :describe const ...)
-            (send #{RSPEC} :describe)
-          }
-        PATTERN
-
-        def_node_matcher :describe_with_rails_metadata?, <<-PATTERN
-          (send #{RSPEC} :describe !const ...
-            (hash <#rails_metadata? ...>)
-          )
-        PATTERN
-
         def_node_matcher :rails_metadata?, <<-PATTERN
           (pair
             (sym :type)
-            (sym {
-                   :channel :controller :helper :job :mailer :model :request
-                   :routing :view :feature :system :mailbox
-                 }
-            )
+            (sym { :channel :controller :helper :job :mailer :model :request
+                   :routing :view :feature :system :mailbox })
           )
         PATTERN
 
-        def_node_matcher :described, <<~PATTERN
-          (block $(send #{RSPEC} :describe $_ ...) ...)
+        def_node_matcher :not_a_const_described, <<~PATTERN
+          (block
+            [  (send #{RSPEC} :describe $[!const !#string_constant?] ...)
+              !(send #{RSPEC} :describe ... (hash <#rails_metadata? ...>)) ]
+            ...
+          )
         PATTERN
 
         def on_top_level_group(top_level_node)
-          node, described = described(top_level_node)
-
-          return unless described
-
-          return if shared_group?(node) ||
-            valid_describe?(node) ||
-            describe_with_rails_metadata?(node) ||
-            string_constant_describe?(described)
-
-          add_offense(described)
+          not_a_const_described(top_level_node) do |described|
+            add_offense(described)
+          end
         end
 
         private
 
-        def string_constant_describe?(described_value)
-          described_value.str_type? &&
-            described_value.value.match?(/^(?:(?:::)?[A-Z]\w*)+$/)
+        def string_constant?(described)
+          described.str_type? &&
+            described.value.match?(/^(?:(?:::)?[A-Z]\w*)+$/)
         end
       end
     end
diff --git a/spec/rubocop/cop/rspec/multiple_describes_spec.rb b/spec/rubocop/cop/rspec/multiple_describes_spec.rb
index 41b476344..ce35a61af 100644
--- a/spec/rubocop/cop/rspec/multiple_describes_spec.rb
+++ b/spec/rubocop/cop/rspec/multiple_describes_spec.rb
@@ -26,10 +26,9 @@
     RUBY
   end
 
-  it 'flags shared example groups' do
-    expect_offense(<<-RUBY)
+  it 'ignores shared example groups' do
+    expect_no_offenses(<<-RUBY)
       shared_examples_for 'behaves' do
-      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Do not use multiple top-level example groups - try to nest them.
       end
       shared_examples_for 'misbehaves' do
       end