diff --git a/airflow/dags/run_spark.py b/airflow/dags/run_spark.py
index 61a32b2..0edd99b 100644
--- a/airflow/dags/run_spark.py
+++ b/airflow/dags/run_spark.py
@@ -58,15 +58,14 @@ default_args = {
 }
 
 spec =SparkConfigurator(
-    name="spark-scholix",
-    mainClass="eu.dnetlib.dhp.sx.graph.SparkCreateScholexplorerDump",
-    jarLocation="s3a://deps/dhp-shade-package-1.2.5-SNAPSHOT.jar",
-    arguments =[ "--sourcePath", "s3a://raw-graph/01", "--targetPath", "s3a://scholix"],
-    executor_cores=10,
-    executor_memory="3G",
-    executor_instances=1,
-    executor_memoryOverhead="3G"
-).get_configuration()
+    name="spark-scholix", \
+        mainClass="eu.dnetlib.dhp.sx.graph.SparkCreateScholexplorerDump", \
+        jarLocation = 's3a://deps/dhp-shade-package-1.2.5-SNAPSHOT.jar'\
+        ,arguments =[ "--sourcePath", "s3a://raw-graph/01", "--targetPath", "s3a://scholix"],\
+        executor_cores=10,\
+        executor_memory="4G", \
+        executor_instances=1, \
+        executor_memoryOverhead="3G").get_configuration()
 
 logger.info("found configuration")
 
diff --git a/airflow/dags/spark_configurator.py b/airflow/dags/spark_configurator.py
index c2794f5..a4bf2d2 100644
--- a/airflow/dags/spark_configurator.py
+++ b/airflow/dags/spark_configurator.py
@@ -2,7 +2,7 @@ class SparkConfigurator:
     def __init__(self,
                  name, 
                  mainClass,
-                 jarLocation,
+                 jarLocation:str,
                  arguments,
                  apiVersion=None,
                  namespace="dnet-spark-jobs",
@@ -22,7 +22,7 @@ class SparkConfigurator:
         self.name = name
         self.image= image
         self.mainClass = mainClass
-        self.jarLocation = jarLocation,
+        self.jarLocation = jarLocation
         self.arguments= arguments
         self.s3Configuration =  {
                     "spark.driver.extraJavaOptions": "-Divy.cache.dir=/tmp -Dcom.amazonaws.sdk.disableCertChecking=true -Dcom.cloudera.com.amazonaws.sdk.disableCertChecking=true",
@@ -68,7 +68,7 @@ class SparkConfigurator:
                 "image":self.image,
                 "imagePullPolicy": "IfNotPresent",
                 "mainClass": self.mainClass,
-                "mainApplicationFile": self.mainClass,
+                "mainApplicationFile": self.jarLocation,
                 "arguments": self.arguments,
                 "sparkVersion": "3.5.1",
                 "sparkConf": self.s3Configuration,