diff --git a/ai/skills/markdown_expert/SKILL.md b/ai/skills/markdown_expert/SKILL.md
index 330ed42..872dd22 100644
--- a/ai/skills/markdown_expert/SKILL.md
+++ b/ai/skills/markdown_expert/SKILL.md
@@ -11,7 +11,7 @@ Strictly adhere to the rules and best practices defined in the local [STYLE_GUID
 
 ## Key Guidelines
 - **Clear & Concise Writing**: Favor simple sentence structures and active voice.
-- **Structural Integrity**: Use hierarchical headings correctly (H1, H2, H3).
+- **Structural Integrity**: Use hierarchical headings correctly (H1, H2, H3). All headings must have an empty newline immediately following them.
 - **Semantic Markdown**: Use appropriate elements (lists, code blocks, tables) for clarity.
 - **Google Style**: Follow the local style guide precisely for all formatting and wording.
 - **Alerts & Callouts**: Use GitHub-style alerts (`> [!NOTE]`, `> [!IMPORTANT]`, etc.).