diff --git a/.install/install_optional.sh b/.install/install_optional.sh
index 95e9d25..804e854 100755
--- a/.install/install_optional.sh
+++ b/.install/install_optional.sh
@@ -38,7 +38,7 @@ fi
 sudo dpkg -i $MY_PATH/libttspico-data.deb
 sudo dpkg -i $MY_PATH/libttspico0.deb
 sudo dpkg -i $MY_PATH/libttspico-utils.deb
-sudo dpkg -i $MY_PATH/libav-tools.deb
+sudo dpkg -i $MY_PATH/libav-tools.deb || sudo apt --fix-broken install
 rm $MY_PATH/libttspico-data.deb $MY_PATH/libttspico0.deb $MY_PATH/libttspico-utils.deb $MY_PATH/libav-tools.deb