diff --git a/test/lib/unittest.js b/test/lib/unittest.js
index afe7eeb..e832eff 100644
--- a/test/lib/unittest.js
+++ b/test/lib/unittest.js
@@ -452,7 +452,7 @@ Test.Unit.Assertions = {
   },
   
   assertElementsMatch: function() {
-    var pass = true, expressions = $A(arguments), elements = $A(expressions.shift());
+    var message, pass = true, expressions = $A(arguments), elements = $A(expressions.shift());
     if (elements.length != expressions.length) {
       message = this.buildMessage('assertElementsMatch', 'size mismatch: ? elements, ? expressions (?).', elements.length, expressions.length, expressions);
       this.flunk(message);
diff --git a/test/unit/dom_test.js b/test/unit/dom_test.js
index b128656..00d695c 100644
--- a/test/unit/dom_test.js
+++ b/test/unit/dom_test.js
@@ -195,8 +195,7 @@ new Test.Unit.Runner({
   },
   
   testNewElementInsert: function() {
-    var container = new Element('div');
-    element = new Element('div');
+    var container = new Element('div'), element = new Element('div');
     container.insert(element);
     
     element.insert({ before: '<p>a paragraph</p>' });
diff --git a/test/unit/form_test.js b/test/unit/form_test.js
index 1c12373..6773d5d 100644
--- a/test/unit/form_test.js
+++ b/test/unit/form_test.js
@@ -299,7 +299,7 @@ new Test.Unit.Runner({
   },
   
   testFormRequest: function() {
-    request = $("form").request();
+    var request = $("form").request();
     this.assert($("form").hasAttribute("method"));
     this.assert(request.url.include("fixtures/empty.js?val1=4"));
     this.assertEqual("get", request.method);
diff --git a/test/unit/string_test.js b/test/unit/string_test.js
index 9d4deea..ab20366 100644
--- a/test/unit/string_test.js
+++ b/test/unit/string_test.js
@@ -275,8 +275,8 @@ new Test.Unit.Runner({
   },
 
   testTemplateEvaluationWithFalses: function() {
-    var source = '<tr><td>#{zero}</td><td>#{false_}</td><td>#{undef}</td><td>#{null_}</td><td>#{empty}</td></tr>';
-    var falses = {zero:0, false_:false, undef:undefined, null_:null, empty:""};
+    var source = '<tr><td>#{zero}</td><td>#{_false}</td><td>#{undef}</td><td>#{_null}</td><td>#{empty}</td></tr>';
+    var falses = {zero:0, _false:false, undef:undefined, _null:null, empty:""};
     var template = new Template(source);
     
     this.assertEqual('<tr><td>0</td><td>false</td><td></td><td></td><td></td></tr>',