diff --git a/functions/prepare_emulator.sh b/functions/prepare_emulator.sh
index 2ea79a73..359ff575 100644
--- a/functions/prepare_emulator.sh
+++ b/functions/prepare_emulator.sh
@@ -722,7 +722,12 @@ prepare_emulator() {
     echo "----------------------"
 
     mkdir -p "/var/config/gzdoom"
+    mkdir -p "/var/data/gzdoom"
     cp -fvr "$emuconfigs/gzdoom/gzdoom.ini" "/var/config/gzdoom"
+    cp -fvr "$emuconfigs/gzdoom/gzdoom.pk3" "/var/data/gzdoom"
+
+    sed -i 's#RETRODECKROMSDIR#'$roms_folder'#g' "/var/config/gzdoom/gzdoom.ini" # This is an unfortunate one-off because set_setting_value does not currently support JSON
+    sed -i 's#RETRODECKSAVESDIR#'$saves_folder'#g' "/var/config/gzdoom/gzdoom.ini" # This is an unfortunate one-off because set_setting_value does not currently support JSON
 
   fi