diff --git a/tests/unit/unit1620.c b/tests/unit/unit1620.c
index 4f1aaaf0aa..fc25eac37f 100644
--- a/tests/unit/unit1620.c
+++ b/tests/unit/unit1620.c
@@ -28,11 +28,14 @@
 
 static CURLcode unit_setup(void)
 {
-  return CURLE_OK;
+  int res = CURLE_OK;
+  global_init(CURL_GLOBAL_ALL);
+  return res;
 }
 
 static void unit_stop(void)
 {
+  curl_global_cleanup();
 }
 
 UNITTEST_START