diff --git a/src/java/com/btk5h/skriptdb/skript/EffExecuteStatement.java b/src/java/com/btk5h/skriptdb/skript/EffExecuteStatement.java
index d003635..44f8ac6 100644
--- a/src/java/com/btk5h/skriptdb/skript/EffExecuteStatement.java
+++ b/src/java/com/btk5h/skriptdb/skript/EffExecuteStatement.java
@@ -51,7 +51,7 @@ public class EffExecuteStatement extends Effect {
   static String lastError;
 
   private static final ExecutorService threadPool =
-      Executors.newFixedThreadPool(SkriptDB.getInstance().getConfig().getInt("thread-pool-size"));
+      Executors.newFixedThreadPool(SkriptDB.getInstance().getConfig().getInt("thread-pool-size", 2));
 
   private Expression<String> query;
   private Expression<HikariDataSource> dataSource;
diff --git a/src/java/com/btk5h/skriptdb/skript/ExprDataSource.java b/src/java/com/btk5h/skriptdb/skript/ExprDataSource.java
index 3e68bce..869418d 100644
--- a/src/java/com/btk5h/skriptdb/skript/ExprDataSource.java
+++ b/src/java/com/btk5h/skriptdb/skript/ExprDataSource.java
@@ -59,7 +59,7 @@ public class ExprDataSource extends SimpleExpression<HikariDataSource> {
     HikariDataSource ds = new HikariDataSource();
 
     //allow specifying of own sql driver class name
-    if (!SkriptDB.getInstance().getConfig().getString("sql-driver-class-name").equals("default")) {
+    if (!SkriptDB.getInstance().getConfig().getString("sql-driver-class-name", "default").equals("default")) {
       ds.setDriverClassName(SkriptDB.getInstance().getConfig().getString("sql-driver-class-name"));
     }
     ds.setJdbcUrl(jdbcUrl);