diff --git a/undervolt.sh b/undervolt.sh
index c904782..c66a85b 100644
--- a/undervolt.sh
+++ b/undervolt.sh
@@ -3,6 +3,7 @@
 # TODO: check for root privileges
 # TODO: check if all the required tools are available
 
+CPUS="$(nproc)"
 # Out your wanted values here
 CORE_SPEED_HZ_P0=2300000  # 2.30GHz slightly over the base (2.10GHz)
 CORE_SPEED_HZ_P1=1450000  # 1.45GHz