diff --git a/tools/install.sh b/tools/install.sh
index 3f4de868..db8c084f 100755
--- a/tools/install.sh
+++ b/tools/install.sh
@@ -110,7 +110,7 @@ main() {
   echo 'p.p.s. Get stickers and t-shirts at http://shop.planetargon.com.'
   echo ''
   printf "${NORMAL}"
-  env zsh
+  env zsh -l
 }
 
 main