diff --git a/spec/rubocop/cop/performance/detect_spec.rb b/spec/rubocop/cop/performance/detect_spec.rb
index cec1a3f..2f1fdbf 100644
--- a/spec/rubocop/cop/performance/detect_spec.rb
+++ b/spec/rubocop/cop/performance/detect_spec.rb
@@ -53,7 +53,7 @@
       expect(cop.messages).to eq(["Use `detect` instead of `#{method}.first`."])
     end
 
-    it "registers an offense when first is called on multiline #{method}" do
+    it "registers an offense when last is called on multiline #{method}" do
       inspect_source(cop, ["[1, 2, 3].#{method} do |i|",
                            '  i % 2 == 0',
                            'end.last'])