diff --git a/tests/test-exports.c b/tests/test-exports.c
index 6be9567a..931dcb58 100644
--- a/tests/test-exports.c
+++ b/tests/test-exports.c
@@ -1477,9 +1477,8 @@ main (int argc, char *argv[])
   /* Do not call setlocale() here: some tests look at untranslated error
    * messages. */
 
-  isolated_test_dir_global_setup ();
-
   g_test_init (&argc, &argv, NULL);
+  isolated_test_dir_global_setup ();
 
   g_test_add_func ("/context/empty", test_empty_context);
   g_test_add_func ("/context/filesystems", test_filesystems);
diff --git a/tests/test-instance.c b/tests/test-instance.c
index d6ba40d8..8954366a 100644
--- a/tests/test-instance.c
+++ b/tests/test-instance.c
@@ -491,9 +491,8 @@ main (int argc, char *argv[])
 {
   int res;
 
-  isolated_test_dir_global_setup ();
-
   g_test_init (&argc, &argv, NULL);
+  isolated_test_dir_global_setup ();
 
   g_test_add_func ("/instance/gc", test_gc);
   g_test_add_func ("/instance/claim-per-app-temp-directory",