diff --git a/lib/ace/test/assertions.js b/lib/ace/test/assertions.js
index e4bf10ee..f28d00a9 100644
--- a/lib/ace/test/assertions.js
+++ b/lib/ace/test/assertions.js
@@ -49,7 +49,7 @@ assert.range = function(range, startRow, startColumn, endRow, endColumn) {
     assert.position(range.end, endRow, endColumn);
 };
 
-assert["false"] = function(value) {
+assert.notOk = function(value) {
     assert.equal(value, false);   
 }
 
diff --git a/lib/ace/test/change_document_test.js b/lib/ace/test/change_document_test.js
index 15484cd7..62d076f7 100644
--- a/lib/ace/test/change_document_test.js
+++ b/lib/ace/test/change_document_test.js
@@ -71,10 +71,10 @@ var Test = {
         this.editor.setDocument(this.doc2);
 
         this.doc1.duplicateLines(0, 0);
-        assert.false(called);
+        assert.notOk(called);
 
         this.doc2.duplicateLines(0, 0);
-        assert.ok(called);
+        assert.notOk(called);
     },
 
     "test: should use cursor of new document" : function() {
@@ -100,7 +100,7 @@ var Test = {
         var called = false;
         this.doc1.getSelection().moveCursorTo(0, 1);
         assert.position(this.editor.getCursorPosition(), 0, 0);
-        assert.false(called);
+        assert.notOk(called);
 
         this.doc2.getSelection().moveCursorTo(1, 1);
         assert.position(this.editor.getCursorPosition(), 1, 1);
@@ -130,7 +130,7 @@ var Test = {
         var called = false;
         this.doc1.getSelection().selectTo(0, 1);
         assert.position(this.editor.getSelection().getSelectionLead(), 0, 0);
-        assert.false(called);
+        assert.notOk(called);
 
         this.doc2.getSelection().selectTo(1, 1);
         assert.position(this.editor.getSelection().getSelectionLead(), 1, 1);
@@ -146,7 +146,7 @@ var Test = {
 
         var called = false;
         this.doc1.setMode(new Text());
-        assert.false(called);
+        assert.notOk(called);
 
         this.doc2.setMode(new JavaScriptMode());
         assert.ok(called);
diff --git a/lib/ace/test/range_test.js b/lib/ace/test/range_test.js
index 3f8beab4..fd1ae013 100644
--- a/lib/ace/test/range_test.js
+++ b/lib/ace/test/range_test.js
@@ -75,12 +75,12 @@ var Test = {
         assert.ok(range.isEmpty());
 
         var range = new Range(1, 2, 1, 6);
-        assert.false(range.isEmpty());
+        assert.notOk(range.isEmpty());
     },
 
     "test: is multi line": function() {
         var range = new Range(1, 2, 1, 6);
-        assert.false(range.isMultiLine());
+        assert.notOk(range.isMultiLine());
 
         var range = new Range(1, 2, 2, 6);
         assert.ok(range.isMultiLine());
@@ -109,9 +109,9 @@ var Test = {
         assert.ok(range.contains(5, 19));
         assert.ok(range.contains(5, 20));
 
-        assert.false(range.contains(1, 9));
-        assert.false(range.contains(0, 0));
-        assert.false(range.contains(5, 21));
+        assert.notOk(range.contains(1, 9));
+        assert.notOk(range.contains(0, 0));
+        assert.notOk(range.contains(5, 21));
     },
 
     "test: contains for single line ranges": function() {
@@ -121,10 +121,10 @@ var Test = {
         assert.ok(range.contains(1, 15));
         assert.ok(range.contains(1, 20));
 
-        assert.false(range.contains(0, 9));
-        assert.false(range.contains(2, 9));
-        assert.false(range.contains(1, 9));
-        assert.false(range.contains(1, 21));
+        assert.notOk(range.contains(0, 9));
+        assert.notOk(range.contains(2, 9));
+        assert.notOk(range.contains(1, 9));
+        assert.notOk(range.contains(1, 21));
     },
 
     "test: extend range": function() {
diff --git a/lib/ace/test/selection_test.js b/lib/ace/test/selection_test.js
index 4151d519..87da1638 100644
--- a/lib/ace/test/selection_test.js
+++ b/lib/ace/test/selection_test.js
@@ -286,7 +286,7 @@ var Test = {
         });
 
         selection.moveCursorTo(0, 5);
-        assert.false(called);
+        assert.notOk(called);
     }
 };
 
diff --git a/lib/ace/test/text_edit_test.js b/lib/ace/test/text_edit_test.js
index 69801a5a..ddad2009 100644
--- a/lib/ace/test/text_edit_test.js
+++ b/lib/ace/test/text_edit_test.js
@@ -437,8 +437,7 @@ var Test = {
         editor.moveCursorTo(1, 8);
         editor.removeLeft();
         assert.equal(doc.toString(), "123\n    456");
-    },
-
+    }
 };
 
 module.exports = require("async/test").testcase(Test);