diff --git a/bin/slurm_calibrate.sh b/bin/slurm_calibrate.sh
index 9e5088757b161bb0206da82517a2f1fd6210184a..917aa6fd659b8cfe568dd5d64d5fad49e7bbefee 100755
--- a/bin/slurm_calibrate.sh
+++ b/bin/slurm_calibrate.sh
@@ -10,7 +10,7 @@ caltype=$6
 final=$7
 finalize=$8
 cluster_cores=$9
-notebook_python_path=$10
+notebook_python_path=${10}
 
 echo "Running with the following parameters:"
 echo "Notebook path: $nb_path"