diff --git a/install_update_dovecot.sh b/install_update_dovecot.sh
index 00afbf0..d249346 100755
--- a/install_update_dovecot.sh
+++ b/install_update_dovecot.sh
@@ -378,6 +378,10 @@ done
 [ $OK = "Yes" -o $OK = "yes" -o "$OK" = "ja"  -o "$OK" = "Ja" ] || fatal "Edit '$(basename $conf_file)' and correct variables"
 
 
+## - Let make use multiple cores (-j<number of cores +1>)
+## -
+export MAKEFLAGS=-j$(expr `grep  "^processor" /proc/cpuinfo | sort -u | wc -l` - 1)
+
 
 # -------------
 # - Begin Install/Update