diff --git a/_extensions/apaquarto/title-block.html b/_extensions/apaquarto/title-block.html
index e69de29..2dae3b3 100644
--- a/_extensions/apaquarto/title-block.html
+++ b/_extensions/apaquarto/title-block.html
@@ -0,0 +1,3 @@
+<!-- This file is intentionally empty. The APA title page for HTML output
+     is generated by frontmatter.lua. Do not add content here — it would
+     override the Lua-generated title block. -->