diff --git a/linux-tkg-config/prepare b/linux-tkg-config/prepare
index 5d3d315..88dfb1c 100644
--- a/linux-tkg-config/prepare
+++ b/linux-tkg-config/prepare
@@ -238,15 +238,16 @@ _tkg_initscript() {
     cp "$_where"/linux-tkg-config/${_basekernel}/* "$_path"
   fi
 
-  if [ -z "$_OPTIPROFILE" ]; then
+  if [[ -z "$_OPTIPROFILE" || ! "$_OPTIPROFILE" =~ ^(1|2|3)$ ]]; then
     # Prompt about optimized configurations. Available variable values will overwrite customization.cfg/external config ones.
     plain "Do you want to use a predefined optimized profile?"
     _default_index="0"
     _prompt_from_array "Custom" "Ryzen Desktop (Performance)" "Other Desktop (Performance)"
+    _OPTIPROFILE=$((${_selected_index}+1))
   fi
-  if [ "$_selected_index" = "1" ]; then
+  if [ "$_OPTIPROFILE" = "2" ]; then
     source "$_where"/linux-tkg-config/ryzen-desktop-profile.cfg && msg2 "Ryzen Desktop (Performance) profile will be used." && msg2 ""
-  elif [ "$_selected_index" = "2" ]; then
+  elif [ "$_OPTIPROFILE" = "3" ]; then
     source "$_where"/linux-tkg-config/generic-desktop-profile.cfg && msg2 "Generic Desktop (Performance) profile will be used." && msg2 ""
   fi