diff --git a/test/init.bats b/test/init.bats
index f2b275b..b685384 100644
--- a/test/init.bats
+++ b/test/init.bats
@@ -69,6 +69,7 @@ EOS
 
 @test "outputs fish-specific syntax" {
   export PYENV_VIRTUALENV_ROOT="${TMP}/pyenv/plugins/pyenv-virtualenv"
+  export PYENV_DEBUG=1
   run pyenv-virtualenv-init - fish
   assert_success
   assert_output <<EOS