diff --git a/build/build.sh b/build/build.sh
index 152790be47f9def755d8b57511f4a1b4e0850c85..93dc54d98b130f29ee659ceae3e37f1f12ff6152 100644
--- a/build/build.sh
+++ b/build/build.sh
@@ -77,7 +77,7 @@ git clone https://github.com/freifunk-gluon/gluon.git ./gluon -b $GLUON_VERSION
 mv gluon/* ./
 
 make update || exit 1
-#CPUS=$(grep -c processor /proc/cpuinfo)
+CPUS=$(grep -c processor /proc/cpuinfo)
 while read line; do
   if [[ $line == *GluonTarget* ]]; then
     targ=$(echo $line | sed -e 's/^.*GluonTarget//' -e 's/^,//' -e 's/)).*//' -e 's/[,]/-/')