diff --git a/doc/build/unreleased/146.rst b/doc/build/unreleased/146.rst
new file mode 100644
index 0000000..85ec87a
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+++ b/doc/build/unreleased/146.rst
@@ -0,0 +1,8 @@
+.. change::
+    :tags: bug, codegen
+    :tickets: 146
+
+    Fixed unexpected error when use control lines which the
+    first control block with no bodies other than comments,
+    as `pass` is now added to the first empty block.
+    Pull request courtesy Hai Zhu.