diff --git a/dlls/msxml3/tests/domdoc.c b/dlls/msxml3/tests/domdoc.c
index 30388581a8c..8ba860925a1 100644
--- a/dlls/msxml3/tests/domdoc.c
+++ b/dlls/msxml3/tests/domdoc.c
@@ -1988,6 +1988,8 @@ static void test_xmlTypes(void)
     }
 
     IXMLDOMDocument_Release(doc);
+
+    free_bstrs();
 }
 
 START_TEST(domdoc)