diff --git a/lldb/test/python_api/default-constructor/sb_stringlist.py b/lldb/test/python_api/default-constructor/sb_stringlist.py
index d69a2dfd4a41..54d669dd6975 100644
--- a/lldb/test/python_api/default-constructor/sb_stringlist.py
+++ b/lldb/test/python_api/default-constructor/sb_stringlist.py
@@ -7,6 +7,7 @@ import lldb
 
 def fuzz_obj(obj):
     obj.AppendString("another string")
+    obj.AppendString(None)
     obj.AppendList(None, 0)
     obj.AppendList(lldb.SBStringList())
     obj.GetSize()