diff --git a/PC/_msi.c b/PC/_msi.c
index c028a88e05c..a15f68450b3 100644
--- a/PC/_msi.c
+++ b/PC/_msi.c
@@ -283,6 +283,7 @@ msiobj_dealloc(msiobj* msidb)
 {
     MsiCloseHandle(msidb->h);
     msidb->h = 0;
+    PyObject_Del(msidb);
 }
 
 static PyObject*