diff --git a/docs/src/reference/workflow-config-file.rst b/docs/src/reference/workflow-config-file.rst
index ac621b4d4..3b400fdbb 100644
--- a/docs/src/reference/workflow-config-file.rst
+++ b/docs/src/reference/workflow-config-file.rst
@@ -955,7 +955,7 @@ colors
        clade_recency: "all"
      global-6m:
        # Override clade recency colors for "global-6m" build
-       clade_recency: 6
+       clade_recency: 6M
 
 Each named traits configuration (``default`` or build-named) supports the following attributes: