diff --git a/PC/_msi.c b/PC/_msi.c
index 15aa7d8fecf..2ab7e731a1e 100644
--- a/PC/_msi.c
+++ b/PC/_msi.c
@@ -284,6 +284,7 @@ msiobj_dealloc(msiobj* msidb)
 {
     MsiCloseHandle(msidb->h);
     msidb->h = 0;
+    PyObject_Del(msidb);
 }
 
 static PyObject*