diff --git a/src/renderer/errors.rs b/src/renderer/errors.rs
index 896805c..5a38068 100644
--- a/src/renderer/errors.rs
+++ b/src/renderer/errors.rs
@@ -1,6 +1,9 @@
 use std::error;
 use std::fmt;
 
+/// Fatal errors while rendering.
+///
+/// A RenderError will halt rendering.
 pub enum RenderError {
     Generic(String),
     TemplateNotFound(String),