diff --git a/camera/ndk/impl/ACameraDevice.cpp b/camera/ndk/impl/ACameraDevice.cpp
index 25a81eb..d24cb81 100644
--- a/camera/ndk/impl/ACameraDevice.cpp
+++ b/camera/ndk/impl/ACameraDevice.cpp
@@ -28,6 +28,10 @@
 
 #include "ACameraCaptureSession.inc"
 
+ACameraDevice::~ACameraDevice() {
+    mDevice->stopLooper();
+}
+
 namespace android {
 namespace acam {
 
@@ -116,14 +120,10 @@
         if (!isClosed()) {
             disconnectLocked(session);
         }
+        LOG_ALWAYS_FATAL_IF(mCbLooper != nullptr,
+                "CameraDevice looper should've been stopped before ~CameraDevice");
         mCurrentSession = nullptr;
-        if (mCbLooper != nullptr) {
-            mCbLooper->unregisterHandler(mHandler->id());
-            mCbLooper->stop();
-        }
     }
-    mCbLooper.clear();
-    mHandler.clear();
 }
 
 void
@@ -892,6 +892,16 @@
     return;
 }
 
+void CameraDevice::stopLooper() {
+    Mutex::Autolock _l(mDeviceLock);
+    if (mCbLooper != nullptr) {
+      mCbLooper->unregisterHandler(mHandler->id());
+      mCbLooper->stop();
+    }
+    mCbLooper.clear();
+    mHandler.clear();
+}
+
 CameraDevice::CallbackHandler::CallbackHandler(const char* id) : mId(id) {
 }
 
diff --git a/camera/ndk/impl/ACameraDevice.h b/camera/ndk/impl/ACameraDevice.h
index c92a95f..7a35bf0 100644
--- a/camera/ndk/impl/ACameraDevice.h
+++ b/camera/ndk/impl/ACameraDevice.h
@@ -109,6 +109,9 @@
 
     inline ACameraDevice* getWrapper() const { return mWrapper; };
 
+    // Stop the looper thread and unregister the handler
+    void stopLooper();
+
   private:
     friend ACameraCaptureSession;
     camera_status_t checkCameraClosedOrErrorLocked() const;
@@ -354,7 +357,7 @@
                   sp<ACameraMetadata> chars) :
             mDevice(new android::acam::CameraDevice(id, cb, chars, this)) {}
 
-    ~ACameraDevice() {};
+    ~ACameraDevice();
 
     /*******************
      * NDK public APIs *