diff --git a/test/mocha/directives.js b/test/mocha/directives.js
index bc763ae096a..5189f1ad318 100644
--- a/test/mocha/directives.js
+++ b/test/mocha/directives.js
@@ -176,7 +176,7 @@ describe("Directives", function() {
     });
 
     it("Should test EXPECT_DIRECTIVE RegExp", function() {
-        var tests = [
+        [
             ["", true],
             ["'test';", true],
             ["'test';;", true],
@@ -185,11 +185,12 @@ describe("Directives", function() {
             ["'tests';   \n\t", true],
             ["'tests';\n\n", true],
             ["\n\n\"use strict\";\n\n", true]
-        ];
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.strictEqual(uglify.EXPECT_DIRECTIVE.test(tests[i][0]), tests[i][1], tests[i][0]);
-        }
+        ].forEach(function(test) {
+            var out = uglify.OutputStream();
+            out.print(test[0]);
+            out.print_string("", null, true);
+            assert.strictEqual(out.get() === test[0] + ';""', test[1], test[0]);
+        });
     });
 
     it("Should only print 2 semicolons spread over 2 lines in beautify mode", function() {
diff --git a/test/run-tests.js b/test/run-tests.js
index 3d291416ff1..4870873dc38 100755
--- a/test/run-tests.js
+++ b/test/run-tests.js
@@ -1,7 +1,5 @@
 #! /usr/bin/env node
 
-global.UGLIFY_DEBUG = true;
-
 var U = require("../tools/node");
 var path = require("path");
 var fs = require("fs");
diff --git a/tools/exports.js b/tools/exports.js
index d83739d573a..09acc13ec2d 100644
--- a/tools/exports.js
+++ b/tools/exports.js
@@ -17,7 +17,3 @@ exports["string_template"] = string_template;
 exports["tokenizer"] = tokenizer;
 exports["is_identifier"] = is_identifier;
 exports["SymbolDef"] = SymbolDef;
-
-if (global.UGLIFY_DEBUG) {
-    exports["EXPECT_DIRECTIVE"] = EXPECT_DIRECTIVE;
-}