diff --git a/src/cv.cpp b/src/cv.cpp
index 5fdb035..b812d71 100644
--- a/src/cv.cpp
+++ b/src/cv.cpp
@@ -26,6 +26,8 @@ void initCV() {
 	facemark->loadModel (resolvePath("cvdata/lbfmodel.yaml"));
 
 	vid = cv::VideoCapture (0);
+
+	if(!vid.isOpened()) {std::cout << "Camera not opened!" << std::endl;}
 }
 
 void dnnFaceDetect(cv::Mat inFrame, std::vector<cv::Rect>* faces) {
@@ -56,6 +58,8 @@ void dnnFaceDetect(cv::Mat inFrame, std::vector<cv::Rect>* faces) {
 void cvFrame() {
 	vid.read(frame);
 
+	if(frame.empty()) return;
+
 	cv::cvtColor (frame, gray, cv::COLOR_BGR2GRAY);
 
 	std::vector<cv::Rect> faces;
@@ -157,6 +161,8 @@ void cvFrame() {
 }
 
 void cvShowFrame() {
+	if(frame.empty()) return;
+
 	cv::imshow("Video Input", frame);
 	cv::waitKey(1);
 }