diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 889096700..83db6c74f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -262,6 +262,8 @@ make clear-os-data  # Clear OpenSearch data directory completely
 make factory-reset  # Complete reset: containers, volumes, and data
 ```
 
+The reset also removes any legacy `opensearch-data` directory, so old OpenSearch index files do not linger after cleanup.
+
 ---
 
 ## Makefile Help System
diff --git a/Makefile b/Makefile
index b565f9d09..7ebd6d17b 100644
--- a/Makefile
+++ b/Makefile
@@ -591,6 +591,7 @@ factory-reset: ## Complete reset (stop, remove volumes, clear data, remove image
 	echo "  - Delete langflow-data directory"; \
 	echo "  - Delete config directory"; \
 	echo "  - Delete data directory (database and session configs)"; \
+	echo "  - Delete opensearch-data directory (legacy OpenSearch bind-mount data)"; \
 	echo "  - Delete JWT keys (private_key.pem, public_key.pem)"; \
 	echo "  - Remove OpenRAG images"; \
 	echo ""; \
@@ -621,6 +622,14 @@ factory-reset: ## Complete reset (stop, remove volumes, clear data, remove image
 		rm -rf data; \
 		echo "$(PURPLE)data removed$(NC)"; \
 	fi; \
+	if [ -d "opensearch-data" ]; then \
+		echo "Removing opensearch-data..."; \
+		if rm -rf opensearch-data; then \
+			echo "$(PURPLE)opensearch-data removed$(NC)"; \
+		else \
+			echo "$(RED)Warning: Failed to remove opensearch-data (check permissions)$(NC)"; \
+		fi; \
+	fi; \
 	if [ -n "$$OPENRAG_DATA_PATH" ] && [ -d "$$OPENRAG_DATA_PATH" ]; then \
 		echo "Removing $$OPENRAG_DATA_PATH..."; \
 		rm -rf "$$OPENRAG_DATA_PATH"; \
diff --git a/docs/docs/_partial-factory-reset-warning.mdx b/docs/docs/_partial-factory-reset-warning.mdx
index c1e11894e..711a76bbf 100644
--- a/docs/docs/_partial-factory-reset-warning.mdx
+++ b/docs/docs/_partial-factory-reset-warning.mdx
@@ -4,6 +4,7 @@ This is a destructive operation that does the following:
 * Destroys all OpenRAG containers, volumes, and local images.
 * Prunes any additional container objects.
 * Deletes the contents of the `~/.openrag` directory _except_ for OpenRAG's `.env` file and the `/documents` subdirectory.
+* Removes any legacy `opensearch-data` directory so old index data does not survive a reset.
 
 <p/>Destroyed containers and deleted data are lost and cannot be recovered after running this operation.
 :::
@@ -19,4 +20,4 @@ Neither <br/> nor wrapping the entire line in <p> </p> worked consistently for b
 Either the line break was missing or the indentation was incorrect.
 
 This behavior was observed in Docusaurus 3.9.2 on 05 Dec 2025. In a future release, if this is not longer an issue, you can remove the tag and this note. :)
--->
\ No newline at end of file
+-->