diff --git a/src/main/java/de/epiceric/shopchest/sql/MySQL.java b/src/main/java/de/epiceric/shopchest/sql/MySQL.java
index 4997eba..ea18702 100644
--- a/src/main/java/de/epiceric/shopchest/sql/MySQL.java
+++ b/src/main/java/de/epiceric/shopchest/sql/MySQL.java
@@ -24,6 +24,7 @@ public class MySQL extends Database {
                 Config.databaseMySqlHost, Config.databaseMySqlPort, Config.databaseMySqlDatabase));
         config.setUsername(Config.databaseMySqlUsername);
         config.setPassword(Config.databaseMySqlPassword);
+        config.setConnectionTestQuery("SELECT 1");
 
         return new HikariDataSource(config);
     }
diff --git a/src/main/java/de/epiceric/shopchest/sql/SQLite.java b/src/main/java/de/epiceric/shopchest/sql/SQLite.java
index e944003..91349f0 100644
--- a/src/main/java/de/epiceric/shopchest/sql/SQLite.java
+++ b/src/main/java/de/epiceric/shopchest/sql/SQLite.java
@@ -35,6 +35,7 @@ public class SQLite extends Database {
         
         HikariConfig config = new HikariConfig();
         config.setJdbcUrl(String.format("jdbc:sqlite:" + dbFile));
+        config.setConnectionTestQuery("SELECT 1");
 
         return new HikariDataSource(config);
     }