diff --git a/scr/2b_postgrest_service.sh b/scr/2b_postgrest_service.sh
index 415a824..1cc5db3 100644
--- a/scr/2b_postgrest_service.sh
+++ b/scr/2b_postgrest_service.sh
@@ -4,12 +4,17 @@
 # config postgrest / frode klevstul / oct 2025
 # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 
-useradd -M -U -d /nonexistent -s /usr/sbin/nologin postgrest
+if ! [ -f "/etc/systemd/system/postgrest.service" ]
+then
 
-cd /tmp
-wget https://gt.op.fo/fro/srv-pub/raw/branch/trunk/cfg/pgr/postgrest.service
-cp postgrest.service /etc/systemd/system/
+    useradd -M -U -d /nonexistent -s /usr/sbin/nologin postgrest
 
-systemctl enable postgrest
-systemctl start postgrest
-systemctl status postgrest
+    cd /tmp
+    wget https://gt.op.fo/fro/srv-pub/raw/branch/trunk/cfg/pgr/postgrest.service
+    cp postgrest.service /etc/systemd/system/
+
+    systemctl enable postgrest
+    systemctl start postgrest
+    systemctl status postgrest
+
+fi