diff --git a/install.sh b/install.sh
index d818fa14..69f09da5 100755
--- a/install.sh
+++ b/install.sh
@@ -15,7 +15,7 @@ DJANGO_SEKRET=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 80 | head -n 1)
 SALTPW=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 20 | head -n 1)
 ADMINURL=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 70 | head -n 1)
 MESHPASSWD=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 25 | head -n 1)
-pgusername=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 8 | head -n 1)
+pgusername=$(cat /dev/urandom | tr -dc 'a-z' | fold -w 8 | head -n 1)
 pgpw=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 20 | head -n 1)
 
 GREEN='\033[0;32m'