diff --git a/lib/rubocop/cop/performance/inefficient_hash_search.rb b/lib/rubocop/cop/performance/inefficient_hash_search.rb
index 99e4e2c0f..778db82af 100644
--- a/lib/rubocop/cop/performance/inefficient_hash_search.rb
+++ b/lib/rubocop/cop/performance/inefficient_hash_search.rb
@@ -84,8 +84,7 @@ def current_method(node)
         end
 
         def use_long_method
-          preferred_config = config.for_all_cops['Style/PreferredHashMethods']
-          preferred_config && preferred_config['EnforcedStyle'] == 'long' && preferred_config['Enabled']
+          config.for_enabled_cop('Style/PreferredHashMethods')['EnforcedStyle'] == 'long'
         end
 
         def correct_argument(node)
diff --git a/spec/rubocop/cop/performance/inefficient_hash_search_spec.rb b/spec/rubocop/cop/performance/inefficient_hash_search_spec.rb
index d7d282bc5..ee68ae6f0 100644
--- a/spec/rubocop/cop/performance/inefficient_hash_search_spec.rb
+++ b/spec/rubocop/cop/performance/inefficient_hash_search_spec.rb
@@ -138,28 +138,24 @@ def my_include?(key)
   end
 
   context 'when config specifies long hash methods but is not enabled' do
-    let(:config) do
-      RuboCop::Config.new(
-        'AllCops' => {
-          'Style/PreferredHashMethods' => {
-            'EnforcedStyle' => 'long', 'Enabled' => false
-          }
+    let(:other_cops) do
+      {
+        'Style/PreferredHashMethods' => {
+          'EnforcedStyle' => 'long', 'Enabled' => false
         }
-      )
+      }
     end
 
     it_behaves_like 'correct behavior', :short
   end
 
   context 'when config enforces long hash methods' do
-    let(:config) do
-      RuboCop::Config.new(
-        'AllCops' => {
-          'Style/PreferredHashMethods' => {
-            'EnforcedStyle' => 'long', 'Enabled' => true
-          }
+    let(:other_cops) do
+      {
+        'Style/PreferredHashMethods' => {
+          'EnforcedStyle' => 'long', 'Enabled' => true
         }
-      )
+      }
     end
 
     it_behaves_like 'correct behavior', :long