diff --git a/agents/gsd-planner.md b/agents/gsd-planner.md
index c8c2e2b5b..005d236d3 100644
--- a/agents/gsd-planner.md
+++ b/agents/gsd-planner.md
@@ -492,7 +492,7 @@ After determining `files_modified`, extract the key interfaces/types/exports fro
 
 ```bash
 # Extract type definitions, interfaces, and exports from relevant files
-grep -n "export\|interface\|type\|class\|function" {relevant_source_files} 2>/dev/null | head -50
+grep -n "export\\|interface\\|type\\|class\\|function" {relevant_source_files} 2>/dev/null | head -50
 ```
 
 Embed these in the plan's `<context>` section as an `<interfaces>` block: