diff --git a/Makefile b/Makefile
index 22aa871..5d34710 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,6 @@
-minify:
+minify: real-minify test-minified
+
+real-minify: strftime.js
 	rm -f strftime-min.js
 	closure <strftime.js >|strftime-min.js
 
@@ -6,4 +8,8 @@ test:
 	TZ=America/Vancouver node test/test.js
 	TZ=CET node test/test.js
 
-.PHONY: test
+test-minified:
+	TZ=America/Vancouver node test/test.js ../strftime-min.js
+	TZ=CET node test/test.js ../strftime-min.js
+
+.PHONY: test test-minified
diff --git a/test/test.js b/test/test.js
index e9c118c..2aac49a 100755
--- a/test/test.js
+++ b/test/test.js
@@ -8,7 +8,8 @@
 // - look for edge cases
 
 var assert = require('assert')
-  , lib = require('../strftime')
+  , libFilename = process.argv[2] || '../strftime.js'
+  , lib = require(libFilename)
 
     // Tue, 07 Jun 2011 18:51:45 GMT
   , Time = new Date(1307472705067)