diff --git a/src/android/camera_stream.h b/src/android/camera_stream.h
index c55d90b..c2cb121 100644
--- a/src/android/camera_stream.h
+++ b/src/android/camera_stream.h
@@ -141,7 +141,7 @@ private:
 	 * The class has to be MoveConstructible as instances are stored in
 	 * an std::vector in CameraDevice.
 	 */
-	 std::unique_ptr<std::mutex> mutex_;
+	std::unique_ptr<std::mutex> mutex_;
 	std::unique_ptr<PostProcessor> postProcessor_;
 };