diff --git a/test/fixtures/expected/alpha-layer-1-fill-linear.png b/test/fixtures/expected/alpha-layer-1-fill-linear.png
index 0b92c4f6..abd22a6e 100644
Binary files a/test/fixtures/expected/alpha-layer-1-fill-linear.png and b/test/fixtures/expected/alpha-layer-1-fill-linear.png differ
diff --git a/test/fixtures/expected/alpha-layer-1-fill-offset.png b/test/fixtures/expected/alpha-layer-1-fill-offset.png
index b9602411..9c8a398b 100644
Binary files a/test/fixtures/expected/alpha-layer-1-fill-offset.png and b/test/fixtures/expected/alpha-layer-1-fill-offset.png differ
diff --git a/test/fixtures/expected/alpha-layer-1-fill-slope.png b/test/fixtures/expected/alpha-layer-1-fill-slope.png
index a02cd31a..c9a277dc 100644
Binary files a/test/fixtures/expected/alpha-layer-1-fill-slope.png and b/test/fixtures/expected/alpha-layer-1-fill-slope.png differ
diff --git a/test/unit/linear.js b/test/unit/linear.js
index 3e88c4d8..05bdad88 100644
--- a/test/unit/linear.js
+++ b/test/unit/linear.js
@@ -43,8 +43,9 @@ describe('Linear adjustment', function () {
 
   it('applies linear levels adjustment w alpha ch', function (done) {
     sharp(fixtures.inputPngOverlayLayer1)
+      .resize(240)
       .linear(a, b)
-      .toBuffer(function (err, data, info) {
+      .toBuffer(function (err, data) {
         if (err) throw err;
         fixtures.assertSimilar(fixtures.expected('alpha-layer-1-fill-linear.png'), data, done);
       });
@@ -52,8 +53,9 @@ describe('Linear adjustment', function () {
 
   it('applies slope level adjustment w alpha ch', function (done) {
     sharp(fixtures.inputPngOverlayLayer1)
+      .resize(240)
       .linear(a)
-      .toBuffer(function (err, data, info) {
+      .toBuffer(function (err, data) {
         if (err) throw err;
         fixtures.assertSimilar(fixtures.expected('alpha-layer-1-fill-slope.png'), data, done);
       });
@@ -61,8 +63,9 @@ describe('Linear adjustment', function () {
 
   it('applies offset level adjustment w alpha ch', function (done) {
     sharp(fixtures.inputPngOverlayLayer1)
+      .resize(240)
       .linear(null, b)
-      .toBuffer(function (err, data, info) {
+      .toBuffer(function (err, data) {
         if (err) throw err;
         fixtures.assertSimilar(fixtures.expected('alpha-layer-1-fill-offset.png'), data, done);
       });