diff --git a/make_pkg b/make_pkg
index 05b452c..3c20dd4 100755
--- a/make_pkg
+++ b/make_pkg
@@ -16,7 +16,9 @@ make_archive() {
 
 
 # Create Callirhoe package
-DIR=`mktemp -d -t callirhoe`
+echo "here"
+DIR=`mktemp -d -t callirhoe.XXX`
+echo "there"
 # TODO: do we need .pyc files? (my guess is yes, how do we force creation?)
 cp -R geom lang layouts lib style "$DIR"
 cp callirhoe.py "$DIR/__main__.py"
@@ -25,7 +27,7 @@ cp callirhoe.py "$DIR/__main__.py"
 make_archive callirhoe "$DIR"
 
 # Create Calmagick package
-DIR=`mktemp -d -t callirhoe`
+DIR=`mktemp -d -t callirhoe.XXX`
 mkdir  "$DIR/lib"
 cp lib/__init__.py lib/geom.py "$DIR/lib"
 cp calmagick.py "$DIR/__main__.py"