diff --git a/lib/spack/spack/install_test.py b/lib/spack/spack/install_test.py
index 200eaed4ec7..dbc1ccc88b7 100644
--- a/lib/spack/spack/install_test.py
+++ b/lib/spack/spack/install_test.py
@@ -8,9 +8,9 @@
 import re
 import shutil
 import sys
-import tty
 
 import llnl.util.filesystem as fs
+import llnl.util.tty as tty
 
 import spack.error
 import spack.util.prefix