diff --git a/lib/rubocop/ast/node.rb b/lib/rubocop/ast/node.rb
index f1ada86dc..f37e5e74f 100644
--- a/lib/rubocop/ast/node.rb
+++ b/lib/rubocop/ast/node.rb
@@ -425,7 +425,7 @@ def loop_keyword?
       end
 
       def keyword?
-        return true if special_keyword? || send_type? && prefix_not?
+        return true if special_keyword? || (send_type? && prefix_not?)
         return false unless KEYWORDS.include?(type)
 
         !OPERATOR_KEYWORDS.include?(type) || loc.operator.is?(type.to_s)
diff --git a/spec/rubocop/ast/node_pattern/lexer_spec.rb b/spec/rubocop/ast/node_pattern/lexer_spec.rb
index 0d81f0270..fb232c5ce 100644
--- a/spec/rubocop/ast/node_pattern/lexer_spec.rb
+++ b/spec/rubocop/ast/node_pattern/lexer_spec.rb
@@ -67,7 +67,7 @@
 
     it 'distinguishes them' do
       types = tokens.map(&:first)
-      expect(types).to eq [:tNODE_TYPE] * 2 + [:tPARAM_CONST] * 7
+      expect(types).to eq ([:tNODE_TYPE] * 2) + ([:tPARAM_CONST] * 7)
       zz, percent_zz = tokens.last(2).map(&:last).map(&:first)
       expect(zz).to eq 'Zz'
       expect(percent_zz).to eq 'Zz'