diff --git a/nixos/big_data.nix b/nixos/big_data.nix
index f77009e..7e30fad 100644
--- a/nixos/big_data.nix
+++ b/nixos/big_data.nix
@@ -66,11 +66,11 @@ let
       spark.eventLog.enabled									true
       spark.eventLog.dir											hdfs://localhost:/logs/spark
       spark.history.fs.logDirectory						hdfs://localhost:/logs/spark
-      # spark.yarn.keytab											${hadoop_keytab_path}
+      # spark.yarn.keytab											${spark_keytab_path}
       # spark.yarn.principal									spark/my.engine@MY.ENGINE
       spark.history.ui.acls.enable						true
       spark.history.kerberos.enabled					true
-      spark.history.kerberos.keytab						${hadoop_keytab_path}
+      spark.history.kerberos.keytab						${spark_keytab_path}
       spark.history.kerberos.principal				spark/my.engine@MY.ENGINE
       spark.yarn.appMasterEnv.PYSPARK_PYTHON	${pysparkEnv.outPath}/bin/${pysparkEnv.executable}
       spark.yarn.appMasterEnv.PYTHONPATH			${pysparkEnv.outPath}/lib/${pysparkEnv.executable}/site-packages