diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
index d3581c70..b29c1edc 100644
--- a/src/android/camera_device.cpp
+++ b/src/android/camera_device.cpp
@@ -2009,7 +2009,7 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
 	worker_.queueRequest(descriptor.request_.get());
 
 	{
-		MutexLocker lock(mutex_);
+		MutexLocker descriptorsLock(descriptorsMutex_);
 		descriptors_[descriptor.request_->cookie()] = std::move(descriptor);
 	}
 
@@ -2020,7 +2020,7 @@ void CameraDevice::requestComplete(Request *request)
 {
 	decltype(descriptors_)::node_type node;
 	{
-		MutexLocker lock(mutex_);
+		MutexLocker descriptorsLock(descriptorsMutex_);
 		auto it = descriptors_.find(request->cookie());
 		if (it == descriptors_.end()) {
 			/*
diff --git a/src/android/camera_device.h b/src/android/camera_device.h
index 117d829e..c949fa50 100644
--- a/src/android/camera_device.h
+++ b/src/android/camera_device.h
@@ -24,6 +24,7 @@
 #include "libcamera/internal/buffer.h"
 #include "libcamera/internal/log.h"
 #include "libcamera/internal/message.h"
+#include "libcamera/internal/thread.h"
 
 #include "camera_metadata.h"
 #include "camera_stream.h"
@@ -134,7 +135,7 @@ private:
 	std::map<int, libcamera::PixelFormat> formatsMap_;
 	std::vector<CameraStream> streams_;
 
-	std::mutex mutex_; /* Protect descriptors_ */
+	libcamera::Mutex descriptorsMutex_; /* Protects descriptors_. */
 	std::map<uint64_t, Camera3RequestDescriptor> descriptors_;
 
 	std::string maker_;