diff --git a/lib/rubocop/cop/performance/sum.rb b/lib/rubocop/cop/performance/sum.rb
index 8662081e0..f91a80039 100644
--- a/lib/rubocop/cop/performance/sum.rb
+++ b/lib/rubocop/cop/performance/sum.rb
@@ -159,7 +159,7 @@ def empty_array_literal?(node)
 
         def array_literal?(node)
           receiver = node.children.first
-          receiver&.literal? && receiver&.array_type?
+          receiver&.literal? && receiver.array_type?
         end
 
         def autocorrect(corrector, init, range)