diff --git a/create_JupyterLab_kernel.sh b/create_JupyterLab_kernel.sh
index 3da24876e518e2da5ec311b1944125fea3f9ce53..64a2f3303dc8fbe3eb47ef08d658dc90b590becb 100644
--- a/create_JupyterLab_kernel.sh
+++ b/create_JupyterLab_kernel.sh
@@ -14,7 +14,7 @@ spack repo add $CONF_PATH
 
 # prepare the env file 
 mkdir $CONF_PATH/bin
-cat <<EOF $CONF_PATH/bin/env.sh
+cat <<EOF > $CONF_PATH/bin/env.sh
 #!/usr/bin/env bash
 set -euxo pipefail
 EOF