diff --git a/graphics/composer/aidl/include/android/hardware/graphics/composer3/ComposerClientWriter.h b/graphics/composer/aidl/include/android/hardware/graphics/composer3/ComposerClientWriter.h
index ae17c51..1d81f7b 100644
--- a/graphics/composer/aidl/include/android/hardware/graphics/composer3/ComposerClientWriter.h
+++ b/graphics/composer/aidl/include/android/hardware/graphics/composer3/ComposerClientWriter.h
@@ -80,8 +80,9 @@
         getDisplayCommand(display).colorTransformMatrix.emplace(std::move(matVec));
     }
 
-    void setDisplayBrightness(int64_t display, float brightness) {
-        getDisplayCommand(display).brightness.emplace(DisplayBrightness{.brightness = brightness});
+    void setDisplayBrightness(int64_t display, float brightness, float brightnessNits) {
+        getDisplayCommand(display).brightness.emplace(
+                DisplayBrightness{.brightness = brightness, .brightnessNits = brightnessNits});
     }
 
     void setClientTarget(int64_t display, uint32_t slot, const native_handle_t* target,
diff --git a/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_ReadbackTest.cpp b/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_ReadbackTest.cpp
index 147a9ee..c081199 100644
--- a/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_ReadbackTest.cpp
+++ b/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_ReadbackTest.cpp
@@ -974,7 +974,7 @@
     // Preconditions to successfully run are knowing the max brightness and successfully applying
     // the max brightness
     ASSERT_GT(maxBrightnessNits, 0.f);
-    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ 1.f);
+    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ 1.f, maxBrightnessNits);
     execute();
     ASSERT_TRUE(mReader.takeErrors().empty());
 
diff --git a/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_TargetTest.cpp b/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_TargetTest.cpp
index 2d08ac6..2cae5a2 100644
--- a/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_TargetTest.cpp
+++ b/graphics/composer/aidl/vts/VtsHalGraphicsComposer3_TargetTest.cpp
@@ -1374,7 +1374,7 @@
     bool brightnessSupport = std::find(capabilities.begin(), capabilities.end(),
                                        DisplayCapability::BRIGHTNESS) != capabilities.end();
     if (!brightnessSupport) {
-        mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ 0.5f);
+        mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ 0.5f, -1.f);
         execute();
         const auto errors = mReader.takeErrors();
         EXPECT_EQ(1, errors.size());
@@ -1383,23 +1383,23 @@
         return;
     }
 
-    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ 0.0f);
+    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ 0.0f, -1.f);
     execute();
     EXPECT_TRUE(mReader.takeErrors().empty());
 
-    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ 0.5f);
+    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ 0.5f, -1.f);
     execute();
     EXPECT_TRUE(mReader.takeErrors().empty());
 
-    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ 1.0f);
+    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ 1.0f, -1.f);
     execute();
     EXPECT_TRUE(mReader.takeErrors().empty());
 
-    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ -1.0f);
+    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ -1.0f, -1.f);
     execute();
     EXPECT_TRUE(mReader.takeErrors().empty());
 
-    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ 2.0f);
+    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ 2.0f, -1.f);
     execute();
     {
         const auto errors = mReader.takeErrors();
@@ -1407,7 +1407,7 @@
         EXPECT_EQ(IComposerClient::EX_BAD_PARAMETER, errors[0].errorCode);
     }
 
-    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ -2.0f);
+    mWriter.setDisplayBrightness(getPrimaryDisplayId(), /*brightness*/ -2.0f, -1.f);
     execute();
     {
         const auto errors = mReader.takeErrors();