diff --git a/graphics/composer/aidl/vts/ReadbackVts.cpp b/graphics/composer/aidl/vts/ReadbackVts.cpp
index 03b1b6c..abb58e2 100644
--- a/graphics/composer/aidl/vts/ReadbackVts.cpp
+++ b/graphics/composer/aidl/vts/ReadbackVts.cpp
@@ -76,6 +76,7 @@
 
     layerSettings.alpha = ::android::half(mAlpha);
     layerSettings.disableBlending = mBlendMode == BlendMode::NONE;
+    layerSettings.source.buffer.isOpaque = mBlendMode == BlendMode::NONE;
     layerSettings.geometry.boundaries = ::android::FloatRect(
             static_cast<float>(mDisplayFrame.left), static_cast<float>(mDisplayFrame.top),
             static_cast<float>(mDisplayFrame.right), static_cast<float>(mDisplayFrame.bottom));
diff --git a/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_ReadbackTest.cpp b/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_ReadbackTest.cpp
index c081199..72ff9ba 100644
--- a/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_ReadbackTest.cpp
+++ b/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_ReadbackTest.cpp
@@ -1132,8 +1132,8 @@
     Color mBackgroundColor;
     Color mTopLayerColor;
 };
-// TODO(b/219576457) Enable tests once we have fixed the bug on composer.
-TEST_P(GraphicsBlendModeCompositionTest, DISABLED_None) {
+
+TEST_P(GraphicsBlendModeCompositionTest, None) {
     for (ColorMode mode : mTestColorModes) {
         EXPECT_TRUE(mComposerClient
                             ->setColorMode(getPrimaryDisplayId(), mode, RenderIntent::COLORIMETRIC)