diff --git a/dpdata/pwscf/__init__.py b/dpdata/pwscf/__init__.py
deleted file mode 100644
index e69de29bb..000000000
diff --git a/dpdata/qe/__init__.py b/dpdata/qe/__init__.py
new file mode 100644
index 000000000..d3f5a12fa
--- /dev/null
+++ b/dpdata/qe/__init__.py
@@ -0,0 +1 @@
+