diff --git a/quickget b/quickget
index be21f05..7c53c0d 100755
--- a/quickget
+++ b/quickget
@@ -836,7 +836,7 @@ EOF
 
         # OS specific tweaks
         case ${OS} in
-          alma|centos-stream|oraclelinux|popos|rockylinux)
+          alma|centos-stream|oraclelinux|popos|rockylinux|nixos)
             echo "disk_size=\"32G\"" >> "${CONF_FILE}";;
           batocera)
             echo "disk_size=\"8G\"" >> "${CONF_FILE}";;
@@ -856,9 +856,6 @@ EOF
             echo "disk_size=\"2G\"" >> "${CONF_FILE}"
             echo "ram=\"128M\"" >> "${CONF_FILE}"
             ;;
-          nixos)
-            echo "disk_size=\"25G\"" >> "${CONF_FILE}"
-            ;;
           truenas-scale|truenas-core)
             echo
             echo "boot=\"legacy\"" >> "${CONF_FILE}"