diff --git a/.appveyor.yml b/.appveyor.yml
index 746fb6d66..69f619314 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -69,8 +69,8 @@ for:
             qttools5-dev qttools5-dev-tools qtmultimedia5-dev libqt5multimedia5-plugins libqt5websockets5-dev \
             libqt5serialport5 libqt5quick5 qtpositioning5 \
             qml-module-qtlocation qml-module-qtpositioning qml-module-qtquick-window2 qml-module-qtquick-dialogs \
-	    qml-module-qtquick-controls qml-module-qtquick-layouts \
-	    libqt5serialport5-dev qtdeclarative5-dev qtpositioning5-dev qtlocation5-dev \
+            qml-module-qtquick-controls qml-module-qtquick-layouts \
+            libqt5serialport5-dev qtdeclarative5-dev qtpositioning5-dev qtlocation5-dev \
             libusb-1.0-0-dev libboost-all-dev libasound2-dev libopencv-dev libopencv-imgcodecs-dev \
             libxml2-dev bison flex ffmpeg  libpostproc-dev libavcodec-dev libavformat-dev \
             libopus-dev libcodec2-dev libairspy-dev libhackrf-dev \