diff --git a/.binder/postBuild b/.binder/postBuild
index 0bd6ff5..2607634 100644
--- a/.binder/postBuild
+++ b/.binder/postBuild
@@ -1,3 +1,3 @@
 # jupyter kernel 
-mkdir -p ${HOME}/.local/share/jupyter/kernels/flux
-cp .binder/kernel.json ${HOME}/.local/share/jupyter/kernels/flux
+mkdir -p /home/jovyan/.local/share/jupyter/kernels/flux
+cp .binder/kernel.json /home/jovyan/.local/share/jupyter/kernels/flux