diff --git a/lib/pdnsadmin.sh b/lib/pdnsadmin.sh
index 88568b2..9504e95 100644
--- a/lib/pdnsadmin.sh
+++ b/lib/pdnsadmin.sh
@@ -92,7 +92,8 @@ start_pdnsadmin() {
   start_service "pdnsadmin" "nc -z 192.168.0.12 9494 &> /dev/null" "8"
 
   # Run MySQL command to create admin user for pdns admin interface
-  docker exec pdnsmysql bash -c "mariadb -updns -p$MYSQL_PASSWORD pdns -e '$PDNS_MYSQL_COMMAND;'"
+  # Allowed to fail because the user may already be there from a previous start.
+  docker exec pdnsmysql bash -c "mariadb -updns -p$MYSQL_PASSWORD pdns -e '$PDNS_MYSQL_COMMAND;'" || :
 
   echo -ne "done.\n"
 }