diff --git a/Dockerfile b/Dockerfile
index 7a53a1d..e6e0d4e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,12 +10,11 @@ ENV SOURCE_DATE_EPOCH=1397818193
 
 RUN apt-get update
 RUN apt-get install -y nano vim ccache software-properties-common
-
 RUN add-apt-repository ppa:git-core/ppa
 RUN apt-get update
 
 RUN apt install -y automake git pkg-config python xutils-dev && \
-    git clone -b xorgproto-2020.1 --depth 1 https://gitlab.freedesktop.org/xorg/proto/xorgproto && \
+   git clone -b xorgproto-2020.1 --depth 1 https://gitlab.freedesktop.org/xorg/proto/xorgproto && \
     cd xorgproto && \
     git reset --hard c62e8203402cafafa5ba0357b6d1c019156c9f36 && \
     ./autogen.sh && \
@@ -210,7 +209,7 @@ RUN apt install -y libgl1-mesa-dev libglib2.0-dev mesa-common-dev && \
     -no-opengl -qpa xcb --xcb -xcb-xlib -feature-xlib -openssl-linked -I /usr/local/openssl/include \
     -L /usr/local/openssl/lib -system-freetype -fontconfig -glib \
     -no-dbus -no-sql-sqlite -no-use-gold-linker -no-kms \
-    -qt-harfbuzz -qt-libjpeg -qt-libpng -qt-pcre -qt-zlib \
+    -qt-harfbuzz -qt-libjpeg -qt-libpng -qt-pcre -qt-zlib -gstreamer \
     -skip qt3d -skip qtandroidextras -skip qtcanvas3d -skip qtcharts -skip qtconnectivity -skip qtdatavis3d \
     -skip qtdoc -skip qtquickcontrols -skip qtquickcontrols2 -skip qtspeech  -skip qtgamepad \
     -skip qtlocation -skip qtmacextras -skip qtnetworkauth -skip qtpurchasing -optimize-size \
@@ -346,3 +345,12 @@ RUN git clone https://git.wownero.com/feather/monero-seed.git && \
     make -Cbuild -j$THREADS && \
     make -Cbuild install && \
     rm -rf $(pwd)
+
+RUN git clone -b stable-0.21 --recursive https://github.com/mchehab/zbar.git && \
+    cd zbar && \
+    git reset --hard 505f1a87b32cb7bb0edbaf37e20ccdd46bbae2a3 && \
+    autoreconf -vfi && \
+    CFLAGS='-fPIC' CXXFLAGS='-fPIC' ./configure --enable-static --disable-shared --without-imagemagick --with-gtk=no --with-python=no --enable-doc=no && \
+    make -j$THREADS && \
+    make install && \
+    rm -rf $(pwd)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index cd5e1e6..d5f011d 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -167,6 +167,7 @@ target_compile_definitions(feather
         ${Qt5Xml_DEFINITIONS}
         ${Qt5WebSockets_DEFINITIONS}
         ${Qt5Multimedia_DEFINITIONS}
+        ${Qt5MultimediaWidgets_DEFINITIONS}
         )
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${Qt5Widgets_EXECUTABLE_COMPILE_FLAGS}")
diff --git a/src/dialog/qrcodescandialog.cpp b/src/dialog/qrcodescandialog.cpp
index 973f439..0d74f33 100644
--- a/src/dialog/qrcodescandialog.cpp
+++ b/src/dialog/qrcodescandialog.cpp
@@ -2,9 +2,8 @@
 #include "ui_qrcodescandialog.h"
 
 #include <QMessageBox>
-#include <QtMultimedia/QCameraInfo>
 #include <QtMultimedia/QCamera>
-#include <QCameraImageCapture>
+#include <QtMultimedia/QCameraInfo>
 
 QrCodeScanDialog::QrCodeScanDialog(QWidget *parent)
         : QDialog(parent)
@@ -15,8 +14,8 @@ QrCodeScanDialog::QrCodeScanDialog(QWidget *parent)
 
     auto cameras = QCameraInfo::availableCameras();
     if (cameras.count() < 1) {
-        QMessageBox::warning(this, "QR code scanner","No available cameras found.");
-        this->reject();
+        QMessageBox::warning(parent, "QR code scanner","No available cameras found.");
+        return;
     }
 
     m_camera = new QCamera(cameras.first(), this);
@@ -37,6 +36,5 @@ void QrCodeScanDialog::onDecoded(int type, const QString &data) {
 
 QrCodeScanDialog::~QrCodeScanDialog()
 {
-    m_camera->stop();
     delete ui;
 }