diff --git a/Formula/imlib2.rb b/Formula/imlib2.rb
index 7e8b4d3106..a3ecdfc218 100644
--- a/Formula/imlib2.rb
+++ b/Formula/imlib2.rb
@@ -25,11 +25,9 @@ class Imlib2 < Formula
     system "make install"
   end
 
-  def test
-    mktemp do
-      system "#{bin}/imlib2_conv", \
-        "/System/Library/Frameworks/SecurityInterface.framework/Versions/A/Resources/Key_Large.png", \
-        "imlib2_test.jpg"
-    end
+  test do
+    system "#{bin}/imlib2_conv", \
+      "/System/Library/Frameworks/SecurityInterface.framework/Versions/A/Resources/Key_Large.png", \
+      "imlib2_test.jpg"
   end
 end