diff --git a/materials/results/2024_bbs_dm_spark-on-vscode_basics2_solution.ipynb b/materials/results/2024_bbs_dm_spark-on-vscode_basics2_solution.ipynb
index 08f2b02..b454df5 100644
--- a/materials/results/2024_bbs_dm_spark-on-vscode_basics2_solution.ipynb
+++ b/materials/results/2024_bbs_dm_spark-on-vscode_basics2_solution.ipynb
@@ -51,7 +51,8 @@
         "os.environ[\"JAVA_HOME\"] = \"C:\\\\Program Files\\\\Java\\\\jdk-12.0.2\" # Change this to the path of your JDK folder\n",
         "os.environ[\"SPARK_HOME\"] = \"C:\\\\Users\\\\enrico.gallinucci2\\\\Downloads\\\\spark-3.5.1-bin-hadoop3\" # Change this to the directory where you have extracted the .tgz file by running the command in the above cell\n",
         "os.environ[\"HADOOP_HOME\"] = os.environ[\"SPARK_HOME\"]\n",
-        "os.environ[\"PATH\"]=os.environ[\"PATH\"]+\";\"+os.environ[\"SPARK_HOME\"]+\"\\\\bin\""
+        "os.environ[\"PATH\"]=os.environ[\"PATH\"]+\";\"+os.environ[\"SPARK_HOME\"]+\"\\\\bin\"\n",
+        "os.environ[\"SPARK_LOCAL_HOSTNAME\"] = \"localhost\""
       ]
     },
     {
diff --git a/materials/results/2024_bbs_dm_spark-on-vscode_basics_solution.ipynb b/materials/results/2024_bbs_dm_spark-on-vscode_basics_solution.ipynb
index 6ae3247..77bdfc5 100644
--- a/materials/results/2024_bbs_dm_spark-on-vscode_basics_solution.ipynb
+++ b/materials/results/2024_bbs_dm_spark-on-vscode_basics_solution.ipynb
@@ -51,7 +51,8 @@
         "os.environ[\"JAVA_HOME\"] = \"C:\\\\Program Files\\\\Java\\\\jdk-12.0.2\" # Change this to the path of your JDK folder\n",
         "os.environ[\"SPARK_HOME\"] = \"C:\\\\Users\\\\Enrico\\\\Downloads\\\\spark-3.5.1-bin-hadoop3\" # Change this to the directory where you have extracted the .tgz file by running the command in the above cell\n",
         "os.environ[\"HADOOP_HOME\"] = os.environ[\"SPARK_HOME\"]\n",
-        "os.environ[\"PATH\"]=os.environ[\"PATH\"]+\";\"+os.environ[\"SPARK_HOME\"]+\"\\\\bin\""
+        "os.environ[\"PATH\"]=os.environ[\"PATH\"]+\";\"+os.environ[\"SPARK_HOME\"]+\"\\\\bin\"\n",
+        "os.environ[\"SPARK_LOCAL_HOSTNAME\"] = \"localhost\""
       ]
     },
     {