diff --git a/src/gstreamer/gstlibcamerasrc.cpp b/src/gstreamer/gstlibcamerasrc.cpp
index 79a025a57..103dfbca2 100644
--- a/src/gstreamer/gstlibcamerasrc.cpp
+++ b/src/gstreamer/gstlibcamerasrc.cpp
@@ -214,10 +214,10 @@ int GstLibcameraSrcState::queueRequest()
 	}

 	GST_TRACE_OBJECT(src_, "Requesting buffers");
-	cam_->queueRequest(wrap->request_.get());

 	{
 		GLibLocker locker(&lock_);
+		cam_->queueRequest(wrap->request_.get());
 		queuedRequests_.push(std::move(wrap));
 	}