diff --git a/linux-tkg-config/prepare b/linux-tkg-config/prepare
index 2c57d8b..a2ae1ad 100644
--- a/linux-tkg-config/prepare
+++ b/linux-tkg-config/prepare
@@ -1402,7 +1402,10 @@ CONFIG_DEBUG_INFO_BTF_MODULES=y\r
     plain "If you want to use the resulting kernel on a machine with more threads, you can hit enter or answer N to use a default of 128."
     read -rp "`echo $'    > N/y : '`" CONDITION_nrcpus;
   fi
-  if [[ "$CONDITION_nrcpus" =~ [yY] ]] || [ -n "$_NR_CPUS_value" ]; then
+  if [[ "$CONDITION_nrcpus" =~ [yY] ]]; then
+    _NR_CPUS_value="$(nproc)"
+  fi
+  if [ -n "$_NR_CPUS_value" ]; then
     scripts/config --set-val "$_NR_CPUS_value"
   else
     scripts/config --set-val "128"