diff --git a/test/js/gzip.test.js b/test/js/gzip.test.js
index f401f4059..6866db059 100644
--- a/test/js/gzip.test.js
+++ b/test/js/gzip.test.js
@@ -20,7 +20,7 @@ server.listen(0);
 function filePath(name) {
     return ['expected', 'actual', 'diff'].reduce(function(prev, key) {
         var dir = path.join('test', key, 'gzip');
-        mkdirp(dir);
+        mkdirp.sync(dir);
         prev[key] = path.join(dir, name);
         return prev;
     }, {});
@@ -81,7 +81,7 @@ test('gzip', function(t) {
                         fs.writeFile(filename.actual, image, function(err) {
                             t.error(err);
                             compare(filename.actual, filename.expected, filename.diff, t, function(error, difference) {
-                                t.ok(difference <= 0.001, 'actual matches expected');
+                                t.ok(difference <= 0.01, 'actual matches expected');
                                 t.end();
                             });
                         });
diff --git a/test/js/map.test.js b/test/js/map.test.js
index 38729413e..5b9a751a5 100644
--- a/test/js/map.test.js
+++ b/test/js/map.test.js
@@ -13,7 +13,7 @@ var compare = require('../compare.js');
 function filePath(name) {
     return ['expected', 'actual', 'diff'].reduce(function(prev, key) {
         var dir = path.join('test', key, 'map');
-        mkdirp(dir);
+        mkdirp.sync(dir);
         prev[key] = path.join(dir, name);
         return prev;
     }, {});
@@ -196,7 +196,7 @@ test('Map', function(t) {
                             fs.writeFile(filename.actual, image, function(err) {
                                 t.error(err);
                                 compare(filename.actual, filename.expected, filename.diff, t, function(error, difference) {
-                                    t.ok(difference <= 0.001, 'actual matches expected');
+                                    t.ok(difference <= 0.01, 'actual matches expected');
                                     t.end();
                                 });
                             });