diff --git a/runcoms/zprofile b/runcoms/zprofile
index d87cb3b0..745fcb3b 100644
--- a/runcoms/zprofile
+++ b/runcoms/zprofile
@@ -71,4 +71,4 @@ if [[ ! -d "$TMPDIR" ]]; then
   mkdir -p -m 700 "$TMPDIR"
 fi
 
-TMPPREFIX="${TMPDIR%/}/zsh"
+export TMPPREFIX="${TMPDIR%/}/zsh"