diff --git a/config/packages/mcp.yaml b/config/packages/mcp.yaml
index 9cd9928..50179be 100644
--- a/config/packages/mcp.yaml
+++ b/config/packages/mcp.yaml
@@ -21,3 +21,6 @@ mcp:
             store: file
             directory: '%kernel.project_dir%/var/mcp-sessions'
             ttl: 3600
+    discovery:
+        scan_dirs: ['src']
+        exclude_dirs: ['DataFixtures']