diff --git a/graphics/composer/2.1/default/HwcClient.cpp b/graphics/composer/2.1/default/HwcClient.cpp
index ce6c480..8c2dd6d 100644
--- a/graphics/composer/2.1/default/HwcClient.cpp
+++ b/graphics/composer/2.1/default/HwcClient.cpp
@@ -497,7 +497,7 @@
 }
 
 Return<Error> HwcClient::setInputCommandQueue(
-        const MQDescriptorSync& descriptor)
+        const MQDescriptorSync<uint32_t>& descriptor)
 {
     std::lock_guard<std::mutex> lock(mCommandMutex);
     return mReader.setMQDescriptor(descriptor) ?
@@ -514,7 +514,7 @@
     if (outDescriptor) {
         hidl_cb(Error::NONE, *outDescriptor);
     } else {
-        hidl_cb(Error::NO_RESOURCES, MQDescriptorSync(0, nullptr, 0));
+        hidl_cb(Error::NO_RESOURCES, MQDescriptorSync<uint32_t>());
     }
 
     return Void();
diff --git a/graphics/composer/2.1/default/HwcClient.h b/graphics/composer/2.1/default/HwcClient.h
index a9bc4cd..c719774 100644
--- a/graphics/composer/2.1/default/HwcClient.h
+++ b/graphics/composer/2.1/default/HwcClient.h
@@ -97,7 +97,7 @@
     Return<Error> setClientTargetSlotCount(Display display,
             uint32_t clientTargetSlotCount) override;
     Return<Error> setInputCommandQueue(
-            const MQDescriptorSync& descriptor) override;
+            const MQDescriptorSync<uint32_t>& descriptor) override;
     Return<void> getOutputCommandQueue(
             getOutputCommandQueue_cb hidl_cb) override;
     Return<void> executeCommands(uint32_t inLength,
diff --git a/graphics/composer/2.1/default/IComposerCommandBuffer.h b/graphics/composer/2.1/default/IComposerCommandBuffer.h
index 8f133fe..7e14f19 100644
--- a/graphics/composer/2.1/default/IComposerCommandBuffer.h
+++ b/graphics/composer/2.1/default/IComposerCommandBuffer.h
@@ -120,7 +120,7 @@
         return true;
     }
 
-    const MQDescriptorSync* getMQDescriptor() const
+    const MQDescriptorSync<uint32_t>* getMQDescriptor() const
     {
         return (mQueue) ? mQueue->getDesc() : nullptr;
     }
@@ -626,7 +626,7 @@
         reset();
     }
 
-    bool setMQDescriptor(const MQDescriptorSync& descriptor)
+    bool setMQDescriptor(const MQDescriptorSync<uint32_t>& descriptor)
     {
         mQueue = std::make_unique<CommandQueueType>(descriptor, false);
         if (mQueue->isValid()) {