diff --git a/bin/vhost.sh b/bin/vhost.sh
index 4c61348..f6c68a1 100755
--- a/bin/vhost.sh
+++ b/bin/vhost.sh
@@ -12,6 +12,8 @@ fi
 
 # constants
 
+FPM_MAX=4
+
 # functions
 
 function vhost::set-virtualhostArray () {