diff --git a/setup/so-variables b/setup/so-variables
index 7442477d4..d1f66abab 100644
--- a/setup/so-variables
+++ b/setup/so-variables
@@ -3,7 +3,7 @@
 total_mem=$(grep MemTotal /proc/meminfo | awk '{print $2}' | sed -r 's/.{3}$//')
 export total_mem
 
-num_cpu_cores=$(grep -c "processor" /proc/cpuinfo | grep -v "KVM")
+num_cpu_cores=$(nproc)
 export num_cpu_cores
 
 readarray -t cpu_core_list <<< "$(grep "processor" /proc/cpuinfo | grep -v "KVM" | awk '{print $3 ""}')"