diff --git a/config-sample.yaml b/config-sample.yaml
index ec46f9e..42e7108 100644
--- a/config-sample.yaml
+++ b/config-sample.yaml
@@ -25,7 +25,7 @@ configInfo:
         maximumRecords: 100
     setting: {}
     supports: {}
-dbConnStr: host=127.0.0.1 port=5432 user=fcs dbname=www-data password=***
+dbConnStr: "pgsql: host=127.0.0.1 port=5432 user=fcs dbname=www-data password=***"
 cmdiUrl: https://arche.acdh.oeaw.ac.at/oaipmh/?verb=GetRecordRaw&metadataPrefix=cmdi&identifier=%s
 highlighting:
     minWords: 5
diff --git a/src/acdhOeaw/arche/fcs/Endpoint.php b/src/acdhOeaw/arche/fcs/Endpoint.php
index 0ca4d83..5e19796 100644
--- a/src/acdhOeaw/arche/fcs/Endpoint.php
+++ b/src/acdhOeaw/arche/fcs/Endpoint.php
@@ -450,7 +450,7 @@ private function sanitizeParam(SruParameters $param, string $operation): void {
     }
 
     private function getDbHandle(): PDO {
-        $pdo = new PDO('pgsql: ' . $this->cfg->dbConnStr);
+        $pdo = new PDO($this->cfg->dbConnStr);
         $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
         $pdo->beginTransaction();
         return $pdo;