diff --git a/config/environment.bash.psi b/config/environment.bash.psi
index 70a8978..1d6bed3 100644
--- a/config/environment.bash.psi
+++ b/config/environment.bash.psi
@@ -15,5 +15,5 @@ declare -x PMODULES_DEFINED_RELEASES=':unstable:stable:deprecated:'
 declare -x PMODULES_DEFAULT_RELEASES='stable'
 
 declare -x PMODULES_DISTFILESDIR='/afs/psi.ch/software/Pmodules/distfiles'
-declare -x PMODULES_TMPDIR='/var/tmp/Pmodules'
+declare -x PMODULES_TMPDIR="/var/tmp/${USER}"